Docs: Path-style access is currently not working

[milanage]

This is a request to make it clear in current S3 repo setting documentation that path-style access is not working, so that users don't expect, for example HTTP request of creating repository being sent to "endpoint/bucket".

Link #31608

[elasticmachine]

Pinging @elastic/es-distributed

[original-brownbear]

I'm closing this. With #41966 now merged it is possible to set whether or not to use path style access with any S3 repo.