[gtkmm-documentation] Comment invalid <category> in DOAP file to pass git pre-receive hook

[Andre Klapper <aklapper src gnome org>]

commit 2df13831801a61a0a77860790422780ba27203ff
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Dec 16 01:42:36 2018 +0100

    Comment invalid <category> in DOAP file to pass git pre-receive hook

 gtkmm-documentation.doap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtkmm-documentation.doap b/gtkmm-documentation.doap
index cdf3df1..a3d7fca 100644
--- a/gtkmm-documentation.doap
+++ b/gtkmm-documentation.doap
@@ -8,7 +8,7 @@
   <shortdesc xml:lang="en">GNOME C++ bindings documentation</shortdesc>
   <homepage rdf:resource="http://www.gtkmm.org/"; />
   <mailing-list rdf:resource="mailto:gtkmm-list gnome org" />
-  <category rdf:resource="http://api.gnome.org/doap-extensions#bindings"; />
+  <!-- <category rdf:resource="http://api.gnome.org/doap-extensions#bindings"; /> -->
 
   <maintainer>
     <foaf:Person>