Update copyright

Author: fthaltun

ui/MainWindow.glade

@@ -12011,7 +12011,7 @@ Use with caution. Are you sure you want to continue?</property>
     <property name="transient-for">MainWindow</property>
     <property name="program-name">Pardus Software Center</property>
     <property name="version">0.1.0~alpha1</property>
-    <property name="copyright">© Pardus</property>
+    <property name="copyright">© TÜBİTAK BİLGEM</property>
     <property name="comments" translatable="yes">Install, remove, update applications</property>
     <property name="website">https://github.com/pardus/pardus-software</property>
     <property name="website-label" translatable="yes">Website</property>