fix(alerting): fixed icon for ok state in panel header, #6136

public/sass/pages/_alerting.scss

@@ -62,7 +62,7 @@
     //box-shadow: 0 0 5px rgba(0,200,0,10.8);
     .panel-alert-icon:before {
       color: $online;
-      content: "\e610";
+      content: "\e611";
     }
   }
 }