fix a little typo in the config file name

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40255 65c4cc65-6c06-0410-ace0-fbb531ad65f3

doc/queues.txt

@@ -14,7 +14,7 @@ First of all, set up call queues in queue.conf
 
 Here is an example:
 
-   ============ queue.conf ===========
+   =========== queues.conf ===========
    | ; Cool Digium Queues            |
    | [general]                       |
    | persistentmembers = yes         |