更新 'PC_Web_Integration_Specification.md'

PC_Web_Integration_Specification.md

@@ -672,7 +672,7 @@ American Express:
 cardNo: 375532604034750 
 expirationMonth: 06 
 expirationYear: 28
-cvv: 6688
+cvv: 688
 firstName: Ken 
 lastName: Swift