chore: prepare non-api docs for non-js variants (#4969)

Author: pavelfeldman

docs/src/api/python.md

@@ -124,13 +124,13 @@ Performs action and waits for given `event` to fire. If predicate is provided, i
 event's value into the `predicate` function and waits for `predicate(event)` to return a truthy value.
 Will throw an error if the page is closed before the `event` is fired.
 
-```python-async
+```python async
 async with page.expect_event(event_name) as event_info:
     await page.click("button")
 value = await event_info.value
 ```
 
-```python-sync
+```python sync
 with page.expect_event(event_name) as event_info:
     page.click("button")
 value = event_info.value
@@ -148,13 +148,13 @@ Performs action and waits for given `event` to fire. If predicate is provided, i
 event's value into the `predicate` function and waits for `predicate(event)` to return a truthy value.
 Will throw an error if browser context is closed before the `event` is fired.
 
-```python-async
+```python async
 async with context.expect_event(event_name) as event_info:
     await context.click("button")
 value = await event_info.value
 ```
 
-```python-sync
+```python sync
 with context.expect_event(event_name) as event_info:
     context.click("button")
 value = event_info.value
@@ -172,13 +172,13 @@ Performs action and waits for given `event` to fire. If predicate is provided, i
 event's value into the `predicate` function and waits for `predicate(event)` to return a truthy value.
 Will throw an error if the socket is closed before the `event` is fired.
 
-```python-async
+```python async
 async with ws.expect_event(event_name) as event_info:
     await ws.click("button")
 value = await event_info.value
 ```
 
-```python-sync
+```python sync
 with ws.expect_event(event_name) as event_info:
     ws.click("button")
 value = event_info.value
@@ -195,13 +195,13 @@ value = event_info.value
 Performs action and waits for the required load state. It resolves when the page reaches a required load state, `load` by default. The navigation must have been committed when this method is called. If current document has
 already reached the required state, resolves immediately.
 
-```python-async
+```python async
 async with page.expect_load_state():
     await page.click('button') # Click triggers navigation.
 # Context manager waits for 'load' event.
 ```
 
-```python-sync
+```python sync
 with page.expect_load_state():
     page.click('button') # Click triggers navigation.
 # Context manager waits for 'load' event.
@@ -219,13 +219,13 @@ Shortcut for main frame's [`method: Frame.expectLoadState`].
 Performs action and waits for the required load state. It resolves when the page reaches a required load state, `load` by default. The navigation must have been committed when this method is called. If current document has
 already reached the required state, resolves immediately.
 
-```python-async
+```python async
 async with frame.expect_load_state():
     await frame.click('button') # Click triggers navigation.
 # Context manager waits for 'load' event.
 ```
 
-```python-sync
+```python sync
 with frame.expect_load_state():
     frame.click('button') # Click triggers navigation.
 # Context manager waits for 'load' event.
@@ -238,21 +238,21 @@ with frame.expect_load_state():
 * langs: python
 - returns: <[EventContextManager]>
 
-Performs action and wait for the next navigation. In case of multiple redirects, the navigation will resolve with
+Performs action and waits for the next navigation. In case of multiple redirects, the navigation will resolve with
 the response of the last redirect. In case of navigation to a different anchor or navigation due to History API
 usage, the navigation will resolve with `null`.
 
 This resolves when the page navigates to a new URL or reloads. It is useful for when you run code which will
 indirectly cause the page to navigate. e.g. The click target has an `onclick` handler that triggers navigation
 from a `setTimeout`. Consider this example:
 
-```python-async
+```python async
 async with page.expect_navigation():
     await page.click("a.delayed-navigation") # Clicking the link will indirectly cause a navigation  
 # Context manager waited for the navigation to happen.
 ```
 
-```python-sync
+```python sync
 with page.expect_navigation():
     page.click("a.delayed-navigation") # Clicking the link will indirectly cause a navigation  
 # Context manager waited for the navigation to happen.
@@ -271,21 +271,21 @@ Shortcut for main frame's [`method: Frame.expectNavigation`].
 * langs: python
 - returns: <[EventContextManager]>
 
-Performs action and wait for the next navigation. In case of multiple redirects, the navigation will resolve with
+Performs action and waits for the next navigation. In case of multiple redirects, the navigation will resolve with
 the response of the last redirect. In case of navigation to a different anchor or navigation due to History API
 usage, the navigation will resolve with `null`.
 
 This resolves when the page navigates to a new URL or reloads. It is useful for when you run code which will
 indirectly cause the page to navigate. e.g. The click target has an `onclick` handler that triggers navigation
 from a `setTimeout`. Consider this example:
 
-```python-async
+```python async
 async with frame.expect_navigation():
     await frame.click("a.delayed-navigation") # Clicking the link will indirectly cause a navigation  
 # Context manager waited for the navigation to happen.
 ```
 
-```python-sync
+```python sync
 with frame.expect_navigation():
     frame.click("a.delayed-navigation") # Clicking the link will indirectly cause a navigation  
 # Context manager waited for the navigation to happen.

docs/src/assertions.md

@@ -35,7 +35,7 @@ const checked = await page.getAttribute('input', 'checked');
 assert(checked);
 ```
 
-```python-async
+```python async
 # Assert text content
 content = await page.text_content('nav:first-child')
 assert content == 'home'
@@ -53,7 +53,7 @@ checked = await page.get_attribute('input', 'checked')
 assert checked
 ```
 
-```python-sync
+```python sync
 # Assert text content
 content = page.text_content('nav:first-child')
 assert content == 'home'
@@ -106,7 +106,7 @@ const classNames = await elementHandle.getAttribute('class');
 assert(classNames.includes('highlighted'));
 ```
 
-```python-async
+```python async
 # Get the element handle
 element_handle = page.wait_for_selector('#box')
 
@@ -119,7 +119,7 @@ class_names = await element_handle.get_attribute('class')
 assert 'highlighted' in class_names
 ```
 
-```python-sync
+```python sync
 # Get the element handle
 element_handle = page.wait_for_selector('#box')
 
@@ -171,7 +171,7 @@ const length = await page.$$eval('li.selected', (items) => items.length);
 assert(length === 3);
 ```
 
-```python-async
+```python async
 # Assert local storage value
 user_id = page.evaluate("() => window.localStorage.getItem('user_id')")
 assert user_id
@@ -190,7 +190,7 @@ length = await page.eval_on_selector_all('li.selected', '(items) => items.length
 assert length == 3
 ```
 
-```python-sync
+```python sync
 # Assert local storage value
 user_id = page.evaluate("() => window.localStorage.getItem('user_id')")
 assert user_id

docs/src/auth.md

@@ -36,7 +36,7 @@ await page.click('text=Submit');
 // Verify app is logged in
 ```
 
-```python-async
+```python async
 page = await context.new_page()
 await page.goto('https://github.com/login')
 
@@ -48,7 +48,7 @@ await page.click('text=Submit')
 # Verify app is logged in
 ```
 
-```python-sync
+```python sync
 page = context.new_page()
 page.goto('https://github.com/login')
 
@@ -88,7 +88,7 @@ const storageState = JSON.parse(process.env.STORAGE);
 const context = await browser.newContext({ storageState });
 ```
 
-```python-async
+```python async
 import json
 import os
 # Save storage state and store as an env variable
@@ -100,7 +100,7 @@ storage_state = json.loads(os.environ["STORAGE"])
 context = await browser.new_context(storage_state=storage_state)
 ```
 
-```python-sync
+```python sync
 import json
 import os
 # Save storage state and store as an env variable
@@ -134,7 +134,7 @@ await context.addInitScript(storage => {
 }, sessionStorage);
 ```
 
-```python-async
+```python async
 import os
 # Get session storage and store as env variable
 session_storage = await page.evaluate("() => JSON.stringify(sessionStorage)")
@@ -152,7 +152,7 @@ await context.add_init_script(storage => {
 }, session_storage)
 ```
 
-```python-sync
+```python sync
 import os
 # Get session storage and store as env variable
 session_storage = page.evaluate("() => JSON.stringify(sessionStorage)")
@@ -217,7 +217,7 @@ const context = await chromium.launchPersistentContext(userDataDir, { headless:
 // Execute login steps manually in the browser window
 ```
 
-```python-async
+```python async
 import asyncio
 from playwright import async_playwright
 
@@ -230,7 +230,7 @@ async def main():
 asyncio.get_event_loop().run_until_complete(main())
 ```
 
-```python-sync
+```python sync
 from playwright import sync_playwright
 
 with sync_playwright() as p:

docs/src/ci.md

@@ -50,13 +50,13 @@ Suggested configuration
    });
    ```
 
-   ```python-async
+   ```python async
       browser = await playwright.chromium.launch(
          args=['--disable-dev-shm-usage']
       )
    ```
 
-   ```python-sync
+   ```python sync
       browser = playwright.chromium.launch({
          args=['--disable-dev-shm-usage']
       })
@@ -203,11 +203,11 @@ const { chromium } = require('playwright');
 const browser = await chromium.launch({ chromiumSandbox: false });
 ```
 
-```python-async
+```python async
 browser = await playwright.chromium.launch(chromiumSandbox=False)
 ```
 
-```python-sync
+```python sync
 browser = playwright.chromium.launch(chromiumSandbox=False)
 ```
 
@@ -287,7 +287,7 @@ const { chromium } = require('playwright');
 const browser = await chromium.launch({ headless: false });
 ```
 
-```python-async
+```python async
 import asyncio
 from playwright import async_playwright
 
@@ -299,7 +299,7 @@ async def main():
 asyncio.get_event_loop().run_until_complete(main())
 ```
 
-```python-sync
+```python sync
 from playwright import sync_playwright
 
 with sync_playwright() as p: