HDFS-7162. Fix CHANGES.txt (should have Chenging Liu's name)

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

@@ -546,7 +546,7 @@ Release 2.6.0 - UNRELEASED
     (Arpit Agarwal)
 
     HDFS-7162. Wrong path when deleting through fuse-dfs a file which already
-    exists in trash (cmccabe)
+    exists in trash (Chengbing Liu via cmccabe)
 
     BREAKDOWN OF HDFS-6134 AND HADOOP-10150 SUBTASKS AND RELATED JIRAS