fix misspelling in CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1504230 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -20,7 +20,7 @@ Release 2.2.0 - UNRELEASED
 
   IMPROVEMENTS
     HDFS-4657.  Limit the number of blocks logged by the NN after a block
-    report to a configurable value.  (Aaron Twinning Meyers via Colin Patrick
+    report to a configurable value.  (Aaron T. Myers via Colin Patrick
     McCabe)
 
   OPTIMIZATIONS