Remove mentions of Sherlock from our docs

What does this MR do and why?

Docs-related follow-up for !77345 (merged).

How to set up and validate locally

This is only docs.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #349293 (closed)