fix: 更新API端点路径至v2版本

将/miniprogram/user/onlineCarHailing和/miniprogram/user等API端点路径更新为/v2/miniprogram/user/onlineCarHailing和/v2/miniprogram/user，以适配后端API的v2版本

pages/washing/washing.js

@@ -18,7 +18,7 @@ Page({
    */
   onLoad(options) {
     var a = this;
-    e.request('/miniprogram/index/balance', {}, !0).then(function (res) {
+    e.request('/v2/miniprogram/index/balance', {}, !0).then(function (res) {
       if (!res.data || !res.data.progressorder) {
         wx.showToast({
           title: '没有进行中的订单',
@@ -116,7 +116,7 @@ Page({
       content: '确定要结算此次洗车订单吗？',
       success: (res) => {
         if (res.confirm) {
-          e.request('/miniprogram/machine/shutdown', {
+          e.request('/v2/miniprogram/machine/shutdown', {
             orderid: this.data.orderid
           }, true).then((res) => {
             if (res.code === 200) {