使用时间字段，显示处理

src/views/marketing/coupon/index.vue

@@ -86,7 +86,7 @@
       <el-table-column label="使用时间" align="center" prop="useStartDate">
         <template slot-scope="scope">
           <span v-if="scope.row.useType==1">{{scope.row.useStartDate}}至{{scope.row.useEndDate}}</span>
-          <span v-if="scope.row.useType==2">领取{{scope.row.useDay}}天后失效</span>
+          <span v-if="scope.row.useType==2">领取{{scope.row.useDay}}小时后失效</span>
         </template>
       </el-table-column>
       <el-table-column label="创建时间" align="center" prop="createTime" width="160">