doc: update readme

Author: pavelfeldman

README.md

@@ -4,7 +4,7 @@
 ###### [API](https://github.com/microsoft/playwright/blob/master/docs/api.md) | [FAQ](#faq) | [Contributing](#contributing)
 
 
-Playwright is a Node library to automate the [Chromium](https://www.chromium.org/Home), [WebKit](https://webkit.org/) and [Firefox](https://www.mozilla.org/en-US/firefox/new/) browsers with a single API. It enables **cross-browser** web automation platform that is **ever-green**, **capable**, **reliable** and **fast**.
+Playwright is a Node library to automate the [Chromium](https://www.chromium.org/Home), [WebKit](https://webkit.org/) and [Firefox](https://www.mozilla.org/en-US/firefox/new/) browsers with a single API. It enables **cross-browser** web automation that is **ever-green**, **capable**, **reliable** and **fast**.
 
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