HDFS-13914. Fix DN UI logs link broken when https is enabled after HDFS-13902. Contributed by Jianfei Jiang.

(cherry picked from commit e1b242a9844d6438c93cdc2ab2443d042b4d5aea)

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

@@ -36,7 +36,7 @@
     <li class="dropdown">
       <a href="#" class="dropdown-toggle" data-toggle="dropdown">Utilities <b class="caret"></b></a>
       <ul class="dropdown-menu">
-        <li><a href="logs">Logs</a></li>
+        <li><a href="logs/">Logs</a></li>
         <li><a href="jmx">Metrics</a></li>
         <li><a href="conf">Configuration</a></li>
         <li><a href="stacks">Process Thread Dump</a></li>