Jason SongandGitHub 84033cee86 Fix broken links in documents (#24630) ...

Before:

<img width="837" alt="image"
src="https://github.com/go-gitea/gitea/assets/9418365/90c1c484-2d8d-4a57-8e86-2f4df0e7fbba">

After:

<img width="822" alt="image"
src="https://github.com/go-gitea/gitea/assets/9418365/e27f6b63-9e7b-4894-b315-7be0cfebe8ca">

2023-05-10 12:34:16 +00:00

..

_index.en-us.md

…

_index.zh-cn.md

…

_index.zh-tw.md

…

api-usage.en-us.md

…

api-usage.zh-cn.md

…

hacking-on-gitea.en-us.md

…

hacking-on-gitea.zh-cn.md

…

integrations.en-us.md

…

integrations.zh-tw.md

…

migrations.en-us.md

…

migrations.zh-tw.md

…

oauth2-provider.en-us.md

…

oauth2-provider.zh-cn.md

…

oauth2-provider.zh-tw.md

…