Use super parameter

Author: nohli

example/lib/main.dart

@@ -7,7 +7,7 @@ import 'package:flutter/services.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();