Docs Minimal server example outdated on the Networking/WebSocket page.

**Your Godot version:**
v4.3.stable.official [77dcf97d8]
**Issue description:**
The Minimal server example seems to be outdated, i got error when i try to use "WebSocketServer.new()"
**URL to the documentation page:**
https://docs.godotengine.org/en/stable/tutorials/networking/websocket.html#minimal-server-example
