Update api rate limiting

[erikjanwestendorp]

📋 Description

Add a note as suggested here:

#7095

[sofietoft]

Thanks for the PR @erikjanwestendorp !

I'll make sure we have this reviewed as soon as possible.

[AndyButland]

Looks a sensible addition to me @erikjanwestendorp, thanks for proposing.

My only question is where you say "Ensure Umbraco reads these forwarded headers", you aren't also saying or linking as to how I would do this. Or, if there's nothing more to do other than is already described in the document, perhaps you don't need this part of the last sentence, and could just say something like "This will prevent all requests appearing to come from from one IP address which would cause incorrect rate-limit enforcement.".

[sofietoft]

Also, I notice there's a merge conflict.
It's most likely due to the fact that the version 15 docs have been unpublished as it has reached end-of-life.
Taking the 15 article out of the PR, will resolve the issue! 💪

[erikjanwestendorp]

@sofietoft thanks for the suggestion, just updated the PR.