docs: update inertia js documentation

docs/pages/inertia.md

@@ -37,7 +37,7 @@ class HandleInertiaRequests extends Middleware
     public function share(Request $request): array
     {
         return array_merge(parent::share($request), [
-            'messages' => flash()->render([], 'array'),
+            'messages' => flash()->render('array'),
         ]);
     }
 }