fixed formatting for field-validators component

assets/javascripts/wizard/components/field-validators.js.es6

@@ -3,7 +3,7 @@ import { observes } from "discourse-common/utils/decorators";
 export default Component.extend({
   actions: {
     perform() {
-            this.appEvents.trigger('custom-wizard:validate');
-        }
+      this.appEvents.trigger("custom-wizard:validate");
+    },
   },
 });