Syntax highlight Mallard .page files
If you view an XML files with a .xml extension, it gets nicely colorized:
https://gitlab.gnome.org/GNOME/gnome-user-docs/-/blob/master/gnome-help/C/legal.xml
But GitLab doesn't know about Mallard .page files, so they don't get colorized:
https://gitlab.gnome.org/GNOME/gnome-user-docs/-/blob/master/gnome-help/C/a11y.page
Is there a local config where we can specify highlighters for file extensions?