更新 'README.md'

README.md

@@ -269,7 +269,8 @@ https://openapi.wlhy.pre.kuaihuoyun.com/order/create_order?access_token=fe12047e
     "message": null,
     "data": {
         "accessToken": "9d0dfe02-2349-421c-90ec-4b9ea174701b",
-        "refreshToken": "9f8326bc-c29f-4a28-a512-26caa1a9850a"
+        "refreshToken": "9f8326bc-c29f-4a28-a512-26caa1a9850a",
+        "expiresIn": 75600
     }
 }
 ```