Update model.md

docs/guide/model.md

@@ -296,7 +296,7 @@ public function rules()
     $usa = [
         'server-side' => function($model) { return $model->country == Country::USA; },
         'client-side' => "function (attribute, value) {return $('#country').value == 'USA';}"
-    ]
+    ];
   
     return [
         ['state', 'required', 'when' => $usa['server-side'], 'whenClient' => $usa['client-side']],