docs: add a warning in migration-guide for third party installation

[M0NsTeRRR]

Description

docs: add a warning in migration-guide for third party installation

How Has This Been Tested?

Screenshots / Logs (if applicable)

Checklist:

• I have read and followed the contribution guidelines.
• Disclosed any use of AI (see our policy)
• I have updated the documentation accordingly.
• All new and existing tests passed.
• Successful build pnpm build
• Translation keys pnpm i18n:extract
• Database migration (if required)

Summary by CodeRabbit

• Documentation
  • Added clarification warnings indicating that third-party installation methods are community-maintained and not officially supported.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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📝 Walkthrough

Walkthrough

This pull request adds warning blocks to the migration guide documentation, clarifying that third-party installation methods, including Kubernetes, are community-maintained and not the responsibility of the Seerr team.

Changes

Cohort / File(s)	Summary
Documentation Updates docs/migration-guide.mdx	Added warning blocks under "Third-party installation methods" and Kubernetes section to clarify community-maintained responsibility.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• docs: fix migration guide title #2425: Modifies the same migration guide file and targets third-party installation methods documentation.
• docs(truenas): update install/migration guide #2491: Updates migration-guide.mdx with related third-party installation and migration guidance changes.

Suggested reviewers

• gauthier-th
• fallenbagel

Poem

🐰 A cautious bunny hops through the guide,
Adding warnings so none run and hide,
"Community keeps this path," we say clear,
No Seerr team blame when trouble draws near! 📝✨

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding a warning about third-party installations to the migration guide documentation.

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