Oops, missed that we've swtiched to single argument = no perents

Author: nlfoster

source/includes/_samples.md

@@ -38,7 +38,7 @@ if (window.ResizeObserver) {
     API.append(elem, iframeElem);
   });
 
-  let setIframeHeight = (e) => {
+  let setIframeHeight = e => {
     if (e.origin !== 'https://www.yourdomain.com') {
       // You should ALWAYS verify the origin matches the third party domain
       // the iframe is loaded from. For more information, see: