docs: Fix typo in Debug.md (#2625)

Author: Skn0tt

docs/api/Debug.md

@@ -53,10 +53,10 @@ This flag enables debug statements for the `Websocket` API.
 > **Note**: statements can overlap with `UNDICI` ones if `undici` or `fetch` flag has been enabled as well.
 
 ```sh
-NODE_DEBUG=fetch node script.js
+NODE_DEBUG=websocket node script.js
 
 WEBSOCKET 18309: connecting to echo.websocket.org using https:h1
 WEBSOCKET 18309: connected to echo.websocket.org using https:h1
 WEBSOCKET 18309: sending request to GET https://echo.websocket.org//
 WEBSOCKET 18309: connection opened <ip_address>
-```
+```