docs: update list demo

Author: tangjinzhou

components/list/__tests__/__snapshots__/demo.test.js.snap

@@ -371,7 +371,7 @@ exports[`renders ./components/list/demo/vertical.md correctly 1`] = `
               <li><span><i class="anticon anticon-like-o" style="margin-right: 8px;"></i>
         156
       </span><em class="ant-list-item-action-split"></em></li>
-              <li><span><i class="anticon anticon-message-o" style="margin-right: 8px;"></i>
+              <li><span><i class="anticon anticon-message" style="margin-right: 8px;"></i>
         2
       </span></li>
             </ul>
@@ -403,7 +403,7 @@ exports[`renders ./components/list/demo/vertical.md correctly 1`] = `
               <li><span><i class="anticon anticon-like-o" style="margin-right: 8px;"></i>
         156
       </span><em class="ant-list-item-action-split"></em></li>
-              <li><span><i class="anticon anticon-message-o" style="margin-right: 8px;"></i>
+              <li><span><i class="anticon anticon-message" style="margin-right: 8px;"></i>
         2
       </span></li>
             </ul>
@@ -435,7 +435,7 @@ exports[`renders ./components/list/demo/vertical.md correctly 1`] = `
               <li><span><i class="anticon anticon-like-o" style="margin-right: 8px;"></i>
         156
       </span><em class="ant-list-item-action-split"></em></li>
-              <li><span><i class="anticon anticon-message-o" style="margin-right: 8px;"></i>
+              <li><span><i class="anticon anticon-message" style="margin-right: 8px;"></i>
         2
       </span></li>
             </ul>

components/list/demo/vertical.md

@@ -61,7 +61,7 @@ export default {
       actions: [
         { type: 'star-o', text: '156' },
         { type: 'like-o', text: '156' },
-        { type: 'message-o', text: '2' },
+        { type: 'message', text: '2' },
       ],
     }
   },