chore(core): run flutter format

Author: danvick

packages/flutter_form_builder/lib/src/form_builder_field.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_form_builder/flutter_form_builder.dart';
 
 enum OptionsOrientation { horizontal, vertical, wrap }
+
 enum ControlAffinity { leading, trailing }
 
 typedef ValueTransformer<T> = dynamic Function(T value);