Add 'xed' to the desktop file keywords.

Since the desktop filename is now org.x.editor.desktop,
the word 'xed' no longer finds anything in start menus.

Author: mtwebster

data/org.x.editor.desktop.in.in

@@ -8,7 +8,7 @@ StartupNotify=true
 MimeType=text/plain;application/x-zerosize;
 Icon=accessories-text-editor
 Categories=GTK;Utility;TextEditor;
-Keywords=text;editor;tabs;highlighting;code;multiple;files;pluggable;notepad;
+Keywords=xed;text;editor;tabs;highlighting;code;multiple;files;pluggable;notepad;
 X-MATE-DocPath=xed/xed.xml
 Actions=new-window;