Desktop file fixes.

- Remove an extra space after the group header.
- Add required key 'Type'.

Signed-off-by: Uli Schlachter <psychon@znc.in>

awesome.desktop

@@ -1,6 +1,7 @@
-[Desktop Entry] 
+[Desktop Entry]
 Encoding=UTF-8
 Name=awesome
 Comment=Highly configurable framework window manager
 TryExec=awesome
 Exec=awesome
+Type=Application