chore(docs): add next.js faq

[easy1090]

Summary

chore(docs): add next.js faq

Related Links

mr: https://github.com/web-infra-dev/rsdoctor/issues/177

Checklist

• [x] I have added changeset via pnpm run change.
• [x] I have updated the documentation.
• [ ] I have added tests to cover my changes.

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