Update docs to include different Redis connections

[davama]

Feature Description

Good Day Everyone,

I am looking into making our gitea highly-available. We have a redis-sentinel cluster and wanted to see if gitea supports it.
Looking around i found this interesting comment: #16017 (comment)

I tested this on our dev gitea and it works well.

When i look at the redis module i see it uses a case switch for different Redis implementations.

Can we update the documentation so that folks are aware of these features?
Willing to submit PR.

Thank you for your consideration

Thanks,
Dave

Screenshots

No response

[lunny]

It's kind of you to send contributions. Please send docs PR to https://gitea.com/gitea/docs.