HADOOP-11163. Correct CHANGES.txt.

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -927,7 +927,8 @@ Release 2.6.0 - UNRELEASED
     HADOOP-11117 UGI HadoopLoginModule doesn't catch & wrap all
     kerberos-related exceptions (stevel)
 
-    HADOOP-11163 MetricsSystemImpl may miss a registered source. (cnauroth)
+    HADOOP-11163. MetricsSystemImpl may miss a registered source.
+    (Chuan Liu via cnauroth)
 
 Release 2.5.1 - 2014-09-05