core: add v2.38.0 cmd docs

[SoggySaussages]

Generate and add cmd docs from a clean 2.38.0 yag instance.

Terms

• I have read and understood this project's Contributing Guidelines

[l-zeuch]

Thanks!

[l-zeuch]

Drive-by comment:
Perhaps we can find a way to automate this with GitHub Actions
triggering on a new YAGPDB release, which then re-generates the command
docs and submits a PR if something has changed; we might have to add
this to upstream, though, rather than having it in the docs repository.

Edit: Alternatively we can use a cronjob that checks every week or every
two weeks; that way, we can keep said workflow in this repository.