docs: fix typo

docs/pages/3.props/3.hooks.md

@@ -32,7 +32,7 @@ It runs before the step is 'closed'.
 ```js
 {
   on: {
-    beforeStep: function (options) {
+    afterStep: function (options) {
       // The logic written here will run before hiding the step, and it can be customized with settings
     }
   }