chizeng api doc

helper/refill/api/xyz/chizeng/config.php

@@ -6,6 +6,7 @@ namespace refill\chizeng;
 use mtopcard;
 class config
 {
+    //https://www.showdoc.com.cn/AQL666666/
     const ORDER_URL = 'http://123.60.208.38:9086/onlinepay.do';
     const QUERY_URL= 'http://123.60.208.38:9086/searchpay.do';
     const BALANCE_UTL = 'http://123.60.208.38:9086/searchbalance.do';