chore: update release notes for 1.26

Author: aslushnikov

docs/src/release-notes-js.md

@@ -6,16 +6,6 @@ toc_max_heading_level: 2
 
 ## Version 1.26
 
-### (Experimental) Docker integration
-
-Playwright Test now ships an **experimental** Docker integration. The Docker container provides a consistent environment, eliminating browser rendering differences across platforms.
-
-With this integration, only **browser binaries** are running inside a Docker container, while all the code is still running on the host operating system.
-
-<img width="450px" src="https://user-images.githubusercontent.com/746130/189774482-fd65d4ce-7b45-46c8-8761-36b76dba4671.png">
-
-Read more in [our documentation](./docker#experimental-playwright-test-docker-integration).
-
 ### Assertions
 
 - New option `enabled` for [`method: LocatorAssertions.toBeEnabled`].
@@ -41,7 +31,7 @@ await page.goto('https://playwright.dev', {
 ```
 
 Prior to 1.26, this would wait for all iframes to fire the `DOMContentLoaded`
-event. 
+event.
 
 To align with web specification, the `'domcontentloaded'` value only waits for
 the target frame to fire the `'DOMContentLoaded'` event. Use `waitUntil: 'load'` to wait for all iframes.