[PSR] Fixed Tests

- Using `php-cs-fixer` tool.

sample/payments/OrderDoVoid.php

@@ -27,12 +27,11 @@ if (isset($_GET['success']) && $_GET['success'] == 'true') {
         ResultPrinter::printResult("Voided Order", "Order", $result->getId(), null, $result);
     } catch (Exception $ex) {
         // NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
- 	    ResultPrinter::printError("Voided Order", "Order", null, null, $ex);
+        ResultPrinter::printError("Voided Order", "Order", null, null, $ex);
         exit(1);
     }
 
     return $result;
-
 } else {
     // NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
  ResultPrinter::printResult("User Cancelled the Approval", null);