move heading to the top of the file

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7574 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/agents.conf.sample

+;
+; Agent configuration
+;
+
 [general]
 ;
 ; Define whether callbacklogins should be stored in astdb for
@@ -5,10 +9,7 @@
 ; Asterisk restarts.
 ;
 persistentagents=yes
-;
-; Agent configuration
-;
-;
+
 [agents]
 ;
 ; Define autologoff times if appropriate.  This is how long