feat(卡券):更新背景图片

pages/myCoupons/myCoupons.wxss

@@ -6,7 +6,7 @@
 .coupon_li {
   width: 90%;
   height: 160rpx;
-  background-image: url("https://zhoumuhao-1993-1256250683.cos.ap-chengdu.myqcloud.com/coupon_list.png");
+  background-image: url("https://dy.shpr.top/shareActivity/coupon_list.png");
   background-repeat: no-repeat;
   background-size: 100% 100%;
   margin: 0 auto;