Updating credits for MAPREDUCE-4229.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1401491 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -458,7 +458,7 @@ Release 0.23.5 - UNRELEASED
     MAPREDUCE-4740. only .jars can be added to the Distributed Cache
     classpath. (Robert Joseph Evans via jlowe)
 
-    MAPREDUCE-4229. Intern counter names in the JT (bobby via daryn)
+    MAPREDUCE-4229. Intern counter names in the JT (Miomir Boljanovic and bobby via daryn)
 
 Release 0.23.4 - UNRELEASED