Fix driver name used for creating SnappPay Receipt (#254)

Co-authored-by: Amir Ziapour <amir.ziapour@shab.ir>

src/Drivers/SnappPay/SnappPay.php

@@ -177,7 +177,7 @@ public function verify(): ReceiptInterface
             throw new PurchaseFailedException($message);
         }
 
-        return (new Receipt('digipay', $body['response']['transactionId']))->detail($body['response']);
+        return (new Receipt('snapppay', $body['response']['transactionId']))->detail($body['response']);
     }
 
     /**