MC-33330: Product is removed from Shopping Cart after cancel PayPal checkout flow

Fixed static test by changing class description in PlaceOrder.php

Author: kieuphan2406

app/code/Magento/Paypal/Controller/Express/AbstractExpress/PlaceOrder.php

@@ -11,7 +11,7 @@
 use Magento\Paypal\Model\Api\ProcessableException as ApiProcessableException;
 
 /**
- * Class PlaceOrder
+ * Creates order on backend and prepares session to show appropriate next step in flow
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class PlaceOrder extends \Magento\Paypal\Controller\Express\AbstractExpress