Help locating source file for WebSocket example in docs

[MonarchRyuzaki]

Hi team 👋

I'd like to fix a small typo in the "Enabling WebSocket support" example where the comment says:

engine: ws # Enable the Socket.io engine
Since ws refers to the raw WebSocket engine (not Socket.io), I’d like to change the comment to something like:

engine: ws # Use the raw WebSocket engine
However, I wasn’t able to find the source file in the repo — could you please point me to where this example lives so I can open a PR?

Thanks a lot!