Update CHANGES.txt for HDFS-8865

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

@@ -30,6 +30,8 @@ Release 2.6.6 - UNRELEASED
 
     HDFS-9743. Fix TestLazyPersistFiles#testFallbackToDiskFull (kihwal)
 
+    HDFS-8865. Improve quota initialization performance. Contributed by Kihwal Lee.
+
 Release 2.6.5 - 2016-10-08
 
   INCOMPATIBLE CHANGES
@@ -61,8 +63,6 @@ Release 2.6.5 - 2016-10-08
     HDFS-10870. Wrong dfs.namenode.acls.enabled default in HdfsPermissionsGuide.apt.vm.
     (John Zhuge via lei)
 
-    HDFS-8865. Improve quota initialization performance. (kihwal)
-
   OPTIMIZATIONS
 
     HDFS-10653. Optimize conversion from path string to components. (Daryn