Add unassigned metadata to doc pages

Closes: https://gitlab.com/gitlab-org/gitlab/-/issues/222328

As this would need changing Ruby files.

Links to issues need to be update to use a hyphen,
this MR changes issue links in /doc/api and development

Some changes from "info" to "information" couldn't be made if
"info" appears in the UI.

Some instances of "info" remain in the GraphQL reference.

Instead, we should be using 'parameter' and 'parameters.'

The URLs needs hyphens now, so did a find and
replace to add them.

This changes any mention of gitlab-ce to gitlab-foss, and any mention of
gitlab-ee to just gitlab.

Also fixes instances in Markdown that broke the rule.

That is, it may not _necessarily_ be removed. We do not provide guarantees for
when API v3 will be available until beyond 9.5.

Signed-off-by: Rémy Coutable <remy@rymai.me>

Signed-off-by: Rémy Coutable <remy@rymai.me>

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Remove unecessary endpoint from repository, add compatibility endpoints for v3 and several improvements

And V4 is the preferred version to be used, because V3 will be removed
in 9.4 (or later).

The endpoint dropped, get ':id/repository/commits/:sha/jobs', should be
replace by a new endpoint.