update: 更改活动列表图片

src/modules/tools/signIn/views/List.vue

@@ -25,7 +25,7 @@
             <el-checkbox v-model="item.checked" @change="handleCheckChange(data)">{{ item.name }}</el-checkbox>
           </div>
           <div class="sign-item-bd">
-            <div class="sign-item-bd-pic"><img :src="item.market_background_img" width="100" height="100" /></div>
+            <div class="sign-item-bd-pic"><img :src="item.background_img" width="100" height="100" /></div>
             <div class="sign-item-bd-content">
               <p>名单人数：{{ item.student_count }}<span style="margin-left:30px;">签到人数：{{ item.student_sign_count }}</span></p>
               <p>活动时间：{{ item.start_time }} 至 {{item.end_time}}</p>