[gnome-mahjongg/arnaudb/maintainership] Add myself as a maintainer.

[Arnaud B. <arnaudb src gnome org>]

commit 797803b9c12bf1eaad7a9f9743b88945bc00475d
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Thu Sep 17 17:16:00 2020 +0200

    Add myself as a maintainer.

 gnome-mahjongg.doap | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/gnome-mahjongg.doap b/gnome-mahjongg.doap
index 1cf9083..c538740 100644
--- a/gnome-mahjongg.doap
+++ b/gnome-mahjongg.doap
@@ -1,3 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+
 <Project xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
          xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#";
          xmlns:foaf="http://xmlns.com/foaf/0.1/";
@@ -21,4 +23,11 @@
       <gnome:userid>aruiz</gnome:userid>
     </foaf:Person>
   </maintainer>
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Arnaud Bonatti</foaf:name>
+      <foaf:mbox rdf:resource="mailto:arnaud bonatti gmail com" />
+      <gnome:userid>arnaudb</gnome:userid>
+    </foaf:Person>
+  </maintainer>
 </Project>