Update docs/USING_ADVANCED.md

styfle · UziTech · web-flow · commit 6d37c182e2a6 · 2019-03-02T15:05:20.000-06:00
Co-Authored-By: UziTech &lt;tony@brix.ninja&gt;
diff --git a/docs/USING_ADVANCED.md b/docs/USING_ADVANCED.md
@@ -122,7 +122,7 @@ markedWorker.postMessage(markdownString);
 
 importScripts('path/to/marked.min.js');
 
-onmessage = function (markdownString) {
+onmessage = (markdownString) => {
   postMessage(marked(markdownString));
 };
 ```
