MAGETWO-91639: Tax is added despite customer group changes

- Fix utf symbol

Author: stkorf

app/code/Magento/Quote/Plugin/RecollectOnGroupChange.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Copyright © Magento, Inc. All rights reserved.
+ * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
 declare(strict_types=1);