Update the error example for the live get map info endpoint

[Banalian]

This endpoint used to return an array, but now returns an object with an error and a message.

Note regarding the example: I'm not knowledgable enough to know if I should obfuscate that traceID. I doubt that it's important, but I'm mentioning it in case someone has a better idea.

[codecat]

The trace ID should be fine. Do we need to update this for any other endpoints?

[Banalian]

Aditional checks I made on the maps endoints

add fav with a wrong id : empty response with a 204 No content code (same as a valid map id)
remove fav: also always returns a 204 with no content, with a valid and invalid id.

I can go update these pages too, let me just navigate github's ui to do it in this PR on the web

[davidbmaier]

Thanks for the contribution, just cleaned up the phrasing a little 👍
Hope I didn't mix anything up while rephrasing, otherwise feel free to open a separate PR to clean it up.