修复支付语法提示错误

pages/API/request-payment/request-payment.uvue

@@ -31,9 +31,8 @@
               provider: "alipay",
               orderInfo: res.data as string,
               fail: (res : RequestPaymentFail) => {
-                console.log(JSON.stringify(res))
-                const error = res as UniError
-                this.errorCode = error.errCode
+                console.log(JSON.stringify(res))
+                this.errorCode = res.errCode
                 uni.showToast({
                   icon: 'error',
                   title: 'errorCode:' + this.errorCode