addressed style comment

Author: cosmic-pixel-painter

unittests/files/eventlistener.ts

@@ -3,7 +3,7 @@ document.addEventListener("arbitrary_invalid_event", (ev) => {
 });
 
 document.addEventListener("arbitrary_invalid_event", {
-  handleEvent(ev) {
+  handleEvent(ev){
     return ev.returnValue;
   },
 });