Update CHANGES.txt to reflect MAPREDUCE-1778 was committed.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/mapreduce/trunk@1102898 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/CHANGES.txt b/CHANGES.txt
index 266d338..d8af240 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -263,7 +263,7 @@
     MAPREDUCE-1868. Add a read and connection timeout to JobClient while
     pulling tasklogs. (Krishna Ramachandran via acmurthy)
 
-    MAPREDUCE-1788. Ensure failure to setup CompletedJobStatusStore is not
+    MAPREDUCE-1778. Ensure failure to setup CompletedJobStatusStore is not
     silently ignored by the JobTracker. (Krishna Ramachandran via acmurthy)
 
     MAPREDUCE-1850. Includes job submit host information (name and ip) in