Docs Typo (parse-community#5317)

Author: mrmarcsmith

3.0.0.md

@@ -144,7 +144,7 @@ To migrate this function you would follow the same practices as the ones before,
 
 ```js
 // after with async/await
-Parse.Cloud.beforeSave('MyClassName', async (request) => {
+Parse.Cloud.define('downloadImage', async (request) => {
   const {
     url, name
   } = request.params;