Found broken `/preparation-for-study/app.comflowy.com` link. Please fix!

Tampilan besar tepat di atas alun-alun pusat berkedip karena kurangnya daya, dan angka-angka di atasnya tetap ada

Find the broken link '/preparation-for-study/app.comflowy.com' in the repository's documentation files, likely in MDX files. Check the link target and correct it to a valid URL. Verify the fix by ensuring the link works in the rendered documentation.

索引モデルが issue の本文から書いたものです。