Reference documentation for types is a bit odd

There are a few examples where we expose the type details in sys but also have it opaque in the regular public docs. For example, git_credential_username.

In these cases, we don't provide any information about the type in the standard credential docs, only in sys. We should do better.

I would expect to see something here: https://libgit2.org/docs/reference/main/credential/index.html

Instead, I only see it here: https://libgit2.org/docs/reference/main/sys/credential/index.html

When we fix this, we need to update the redirects in libgit2.org/libgit2/index.html to account for it

Comparez la référence standard des identifiants sur libgit2.org/docs/reference/main/credential/index.html avec la référence sys, en utilisant git_credential_username comme exemple. Examinez ensuite libgit2.org/libgit2/index.html et mettez à jour les redirections en même temps que la documentation de référence. Le travail est considéré comme terminé lorsque les informations de type pertinentes apparaissent dans la documentation standard des identifiants et que les redirections prennent en compte la modification.