Format snippets

snippets/addMultipleEvents.md

@@ -9,8 +9,10 @@ Adds multiple event listeners with the same handler to an element.
 
 ```js
 const addMultipleListeners = (el, types, listener, options, useCapture) => {
-  types.forEach(type => el.addEventListener(type, listener, options, useCapture));
-}
+  types.forEach(type =>
+    el.addEventListener(type, listener, options, useCapture)
+  );
+};
 ```
 
 ```js