HDFS-14879. Header was wrong in Snapshot web UI. Contributed by hemanthboyina

(cherry picked from commit b23bdaf085dbc561c785cef1613bacaf6735d909)

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfshealth.html

@@ -273,7 +273,7 @@
 </table>
 </small>
 
-<div class="page-header"><h1><small>Snapshotted directories: {@size key=Snapshots}{/size}</small></div>
+<div class="page-header"><h1><small>Snapshots: {@size key=Snapshots}{/size}</small></div>
 
 <small>
 <table class="table">