Update IRC network to OFTC

Change-Id: Id5ea2ab50634156f3d190621302d74c2830b2351
diff --git a/doc/source/contributor/contributing.rst b/doc/source/contributor/contributing.rst
index d0e5a21..6d9bb86 100644
--- a/doc/source/contributor/contributing.rst
+++ b/doc/source/contributor/contributing.rst
@@ -13,7 +13,7 @@
 
 Communication
 ~~~~~~~~~~~~~
-* IRC channel ``#openstack-qa`` at FreeNode
+* IRC channel ``#openstack-qa`` at OFTC
 * Mailing list (prefix subjects with ``[qa]`` for faster responses)
   http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-discuss