AMBARI-15672. Describe RATE more accurately in Grafana. (Prajwal Rao via yusaku)

ambari-metrics/ambari-metrics-grafana/ambari-metrics/partials/query.editor.html

@@ -130,8 +130,8 @@
                 <i class="fa fa-warning"></i>
             </a>
         </li>
-        <li class="tight-form-item tight-form-align" style="width: 86px">
-            <editor-checkbox text="Rate" model="target.shouldComputeRate" change="targetBlur()"></editor-checkbox>
+        <li class="tight-form-item tight-form-align">
+            <editor-checkbox text="Rate (/sec)" model="target.shouldComputeRate" change="targetBlur()"></editor-checkbox>
         </li>
 
         <li class="tight-form-item tight-form-align">