format and add a newline at the end

Author: yiiim

packages/go_router_builder/test_inputs/required_nullable_type_arguments_extra_value.dart

@@ -4,7 +4,8 @@
 
 import 'package:go_router/go_router.dart';
 
-@TypedGoRoute<RequiredNullableTypeArgumentsExtraValueRoute>(path: '/default-value-route')
+@TypedGoRoute<RequiredNullableTypeArgumentsExtraValueRoute>(
+    path: '/default-value-route')
 class RequiredNullableTypeArgumentsExtraValueRoute extends GoRouteData {
   RequiredNullableTypeArgumentsExtraValueRoute({required this.$extra});
   final List<int?> $extra;

packages/go_router_builder/test_inputs/required_nullable_type_arguments_extra_value.dart.expect

@@ -27,4 +27,4 @@ extension $RequiredNullableTypeArgumentsExtraValueRouteExtension
 
   void replace(BuildContext context) =>
       context.replace(location, extra: $extra);
-}
+}