Add hyperlink to [GL XXXX] labels in documentation
When I review Release Notes, I wish there was a hyperlink on
[GL #XXXX] and
[GL !XXXX] labels pointing me to the actual issue or merge request on GitLab.
Ideally this works similarly to
:rfc: roles and is not forcing developers to type HTTP links verbatim, e.g.:
Results in: [GL #1620]
Results in: [GL !3950]