docs: virshcmdref: change repo URL to GitLab

Also note that it's archived, because it's definitely
not maintained anymore.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

docs/virshcmdref.html.in

@@ -66,22 +66,10 @@
 
     <h2><a id="git">DocBook source GIT repository</a></h2>
     <p>
-      The DocBook source is maintained in a <a
+      The DocBook source is archived in a <a
       href="http://git-scm.com/">git</a> repository available on
-      <a href="https://libvirt.org/git/">libvirt.org</a>:
+      <a href="https://gitlab.com/libvirt/libvirt-virshcmdref">gitlab.com</a>.
     </p>
 
-<pre>
-git clone https://libvirt.org/git/libvirt-virshcmdref.git
-</pre>
-
-    <p>
-      It can also be browsed online:
-    </p>
-
-<pre>
-<a href="https://libvirt.org/git/?p=libvirt-virshcmdref.git">https://libvirt.org/git/?p=libvirt-virshcmdref.git</a>
-</pre>
-
   </body>
 </html>