[editor] Removed invalid HTML element

desktop/core/src/desktop/static/desktop/help/index.html

@@ -21,9 +21,9 @@
 			Cloudera Impala queries, manage the Hive Metastore, HBase, Sqoop, ZooKeeper, MapReduce jobs, and
 			create and schedule worklows with Oozie.</p>
 
-    </br>
+    <br/>
     <p class="p alert"> Checkout the latest updates and tutorials on <a href="http://gethue.com" target="_blank">http://gethue.com</a>!</p>
-    </br>
+    <br/>
 
 	</div>
 

desktop/libs/notebook/src/notebook/templates/editor_components.mako

@@ -1070,7 +1070,7 @@ ${ require.config() }
               </div>
               <!-- /ko -->
             <!-- /ko -->
-            </br>
+            <br/>
           </fieldset>
         </form>
         <!-- /ko -->