添加申请货到付款成功页面中的返回首页链接地址

Code Review By Rock Zhang

@@ -62,6 +62,8 @@ class PayModel
                 $result['ordersUrl'] = Helpers::url('/home/orders');
                 // 退换货地址
                 $result['backGoodsUrl'] = Helpers::url('/help', array('category_id' => 121));
+                // 返回首页地址
+                $result['returnHomeUrl'] = Helpers::url('/');
                 break;
             }