docs: add backlink from WebSocket to WebSockeRoute (#34600)

Author: mxschmitt

docs/src/api/class-websocket.md

@@ -1,7 +1,9 @@
 # class: WebSocket
 * since: v1.8
 
-The [WebSocket] class represents websocket connections in the page.
+The [WebSocket] class represents WebSocket connections within a page. It provides the ability to inspect and manipulate the data being transmitted and received.
+
+If you want to intercept or modify WebSocket frames, consider using [WebSocketRoute].
 
 ## event: WebSocket.close
 * since: v1.8

packages/playwright-core/types/types.d.ts

@@ -21301,8 +21301,11 @@ export interface WebError {
 }
 
 /**
- * The [WebSocket](https://playwright.dev/docs/api/class-websocket) class represents websocket connections in the
- * page.
+ * The [WebSocket](https://playwright.dev/docs/api/class-websocket) class represents WebSocket connections within a
+ * page. It provides the ability to inspect and manipulate the data being transmitted and received.
+ *
+ * If you want to intercept or modify WebSocket frames, consider using
+ * [WebSocketRoute](https://playwright.dev/docs/api/class-websocketroute).
  */
 export interface WebSocket {
   /**