docs: fix typos (#82503)
## Summary
Fix typos and spelling errors in various MDX documentation files to
improve clarity and consistency.
Documentation:
- Standardize 'cacheable' spelling across self-hosting guide
- Correct 'potentionally' to 'potentially' in image component references
- Fix 'unecessary' to 'unnecessary' in use-link-status guide
### Improving Documentation
- [x] Run `pnpm prettier-fix` to fix formatting issues before opening
the PR.
- [x] Read the Docs Contribution Guide to ensure your contribution
follows the docs guidelines:
https://nextjs.org/docs/community/contribution-guide
Co-authored-by: Joseph <joseph.chamochumbi@vercel.com>
