graphQl-44: fixed copyrights

Author: vitaliyboyko

app/code/Magento/GraphQl/Model/Resolver/ComplexTextValue/HtmlFormat.php

@@ -1,7 +1,7 @@
 <?php
 /**
- * @author Atwix Team
- * @copyright Copyright (c) 2018 Atwix (https://www.atwix.com/)
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
  */
 declare(strict_types=1);