Update WebView2 requirement docs for Windows 11 (#2408)

docs/getting-started/setup-windows.md

@@ -59,6 +59,10 @@ Download and install the proper variant for your computer's architecture.
 
 ## 4. Install WebView2
 
+<Alert title="Note">
+WebView2 is pre-installed in Windows 11. 
+</Alert>
+
 Finally, you will need to install WebView2. The best way to do this is to download and run the Evergreen Bootstrapper from [this page](https://developer.microsoft.com/en-us/microsoft-edge/webview2/#download-section).
 
 ## Continue