Update replay debugging documentation

[lL1l1]

Description of the proposed changes

Update replay debugging documentation based on my experience.

Testing done on the proposed changes

I used the FAF client workflow to debug for #7256 (comment)

Checklist

- [ ] Changes are annotated, including comments where useful

• Changes are documented in a changelog snippet according to the guidelines.
• Request 2-3 reviewers from the list of reviewers and their areas of knowledge.

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