influxdb: small css fix for order by in query editor

public/app/plugins/datasource/influxdb/partials/query.editor.html

@@ -92,7 +92,7 @@
     <div class="gf-form-inline" ng-if="ctrl.target.orderByTime === 'DESC'">
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">ORDER BY</label>
-        <label class="gf-form-label pointer" ng-click="ctrl.removeOrderByTime()">time <span classs="query-keyword">DESC</span> <i class="fa fa-remove"></i></label>
+        <label class="gf-form-label pointer" ng-click="ctrl.removeOrderByTime()">time <span class="query-keyword">DESC</span> <i class="fa fa-remove"></i></label>
       </div>
       <div class="gf-form gf-form--grow">
 				<div class="gf-form-label gf-form-label--grow"></div>