doc(relay): PII guide is for static mode

[jjbayer]

Pre-merge checklist

If you work at Sentry, you're able to merge your own PR without review, but please don't unless there's a good reason.

• [ ] Checked Vercel preview for correctness, including links
• [x] PR was reviewed and approved by any necessary SMEs
• [ ] PR was reviewed and approved by a member of the Sentry docs team

Description of changes

In order to clarify that editing PII settings in project configs is for Relay Static Mode only:

1. Move the guide under "Relay Modes,
2. add "Static Mode" to the title.

Fixes https://github.com/getsentry/sentry/issues/67755.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 2, 2024 7:47am

[codecov[bot]]

Bundle Report

Changes will increase total bundle size by 27 bytes :arrow_up:

Bundle name	Size	Change
sentry-docs-server	6.11MB	36 bytes :arrow_up:
sentry-docs-client	5.52MB	6 bytes :arrow_down:
sentry-docs-edge-server	618.05kB	3 bytes :arrow_down:

[vivianyentran]

+1 on adding PII scrubbing examples! that would be super useful!

[jjbayer]

Would it also make sense, either here or as a separate PR, to add PII scrubbing examples for managed mode?

@cstavitsky added a paragraph about managed mode now. In managed mode, rules are configured through the UI and then propagated to the Relay instances running on the user's premises.