Close#46
Same as those in [blog](https://gitea.com/gitea/blog/pulls/272), but for docs and api
Ejected DocPage (unsafe to eject) and ApiDoc (safe to eject) for layout changes

Screenshots

Co-authored-by: techknowlogick <techknowlogick@noreply.gitea.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Reviewed-on: https://gitea.com/gitea/gitea-docusaurus/pulls/47
Co-authored-by: HesterG <hestergong@gmail.com>
Co-committed-by: HesterG <hestergong@gmail.com>