MAPREDUCE-5299. Changed jira number for the commit in CHANGES.txt.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1489229 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -481,7 +481,7 @@ Release 2.1.0-beta - UNRELEASED
     of the entire Container in the startContainer call - YARN-684.
     (Vinod Kumar Vavilapalli via sseth)
 
-    MAPREDUCE-5220. Fix backward incompatibility for TaskCompletionEvent by
+    MAPREDUCE-5299. Fix backward incompatibility for TaskCompletionEvent by
     adding back setTaskID. (Zhijie Shen via acmurthy) 
 
     MAPREDUCE-5296. Fix backward incompatibility for JobControl by adding the