[PSR] Fixed Tests

- Using `php-cs-fixer` tool.

sample/billing/SuspendBillingAgreement.php

@@ -18,15 +18,13 @@ $agreementStateDescriptor = new AgreementStateDescriptor();
 $agreementStateDescriptor->setNote("Suspending the agreement");
 
 try {
-
     $createdAgreement->suspend($agreementStateDescriptor, $apiContext);
 
     // Lets get the updated Agreement Object
     $agreement = Agreement::get($createdAgreement->getId(), $apiContext);
-
 } catch (Exception $ex) {
     // NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
- 	ResultPrinter::printError("Suspended the Agreement", "Agreement", null, $agreementStateDescriptor, $ex);
+    ResultPrinter::printError("Suspended the Agreement", "Agreement", null, $agreementStateDescriptor, $ex);
     exit(1);
 }