update[litemall-wx]: 退款取消订单的按钮命名“申请退款”，这样可以和未支付取消订单的“取消订单”想区别。

litemall-wx/pages/ucenter/orderDetail/orderDetail.wxml

@@ -9,7 +9,7 @@
                 <view class="btn active" bindtap="payOrder" wx:if="{{handleOption.pay}}">去付款</view>
                 <view class="btn active" bindtap="confirmOrder" wx:if="{{handleOption.confirm}}">确认收货</view>
                 <view class="btn active" bindtap="deleteOrder" wx:if="{{handleOption.delete}}">删除订单</view>
-                <view class="btn active" bindtap="refundOrder" wx:if="{{handleOption.refund}}">取消订单</view>
+                <view class="btn active" bindtap="refundOrder" wx:if="{{handleOption.refund}}">申请退款</view>
             </view>
         </view>
     </view>