no message

Former-commit-id: 90b140d703fb3fce2bef2d98516293854ef9d014
Former-commit-id: a77a9d22757d33850b7366f9d603a920458a29e0
Former-commit-id: d8f16caa59b4ebe374d26c011f967e3dc7e4eef0

src/pages/demo/plugins/import/csv.vue

@@ -7,14 +7,14 @@
     </PageHeader>
     <div class="d2-mb">
       <el-button @click="download">
-        <d2-icon name="download"></d2-icon>
+        <d2-icon name="download"/>
         下载演示 .csv 表格
       </el-button>
     </div>
     <div class="d2-mb">
       <el-upload :before-upload="handleUpload" action="default">
         <el-button type="success">
-          <d2-icon name="file-o"></d2-icon>
+          <d2-icon name="file-o"/>
           选择要导入的 .csv 表格
         </el-button>
       </el-upload>