updating channel

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1465105 13f79535-47bb-0310-9956-ffa450edef68

docs/src/site/apt/irc.apt

@@ -16,5 +16,5 @@
 
 Ambari IRC Channel
 
- There is an IRC channel dedicated to ambari at irc.freenode.org. The name of the channel is #ambari.
+ There is an IRC channel dedicated to ambari at irc.freenode.org. The name of the channel is #apacheambari.
  The IRC channel can be used for online discussion about ambari related stuff, but developers should be careful to transfer all the official decisions or useful discussions to the issue tracking system.