Documentation for `s3.profile-name` and `client.profile-name` is potentially misleading / vague

[thomas-pfeiffer]

Apache Iceberg version

0.11.0

Please describe the bug 🐞

Issue:
In #2948 s3.profile-name and client.profile-name were introduced as new configuration parameters. These 2 parameters are only implemented for Fsspec backend so far. In the documentation (see mkdocs/docs/configuration.md) it gives the impression that these 2 parameters are supported generally (or more specifically also for PyArrow backend, where it is not implemented yet - see #3065 ).

Suggested fix:
There should be a remark in the documentation (see mkdocs/docs/configuration.md ) of s3.profile-name and client.profile-name stating the Fsspec backend must be used (or py-io-impl must be set to pyiceberg.io.fsspec.FsspecFileIO) for them to work.

Willingness to contribute

• I can contribute a fix for this bug independently
• I would be willing to contribute a fix for this bug with guidance from the Iceberg community
• I cannot contribute a fix for this bug at this time

[thomas-pfeiffer]

I created PR #3085 to fix this documentation issue. @stats-dev & @kevinjqliu Could you please take a look at it and provide your feedback?