improve update

spug_web/src/pages/system/setting/About.js

@@ -6,7 +6,7 @@
 import React from 'react';
 import styles from './index.module.css';
 import { SmileTwoTone } from '@ant-design/icons';
-import { Descriptions, Spin, notification } from "antd";
+import { Descriptions, Spin, Button, notification } from 'antd';
 import { observer } from 'mobx-react'
 import { http, VERSION } from 'libs';
 
@@ -35,7 +35,17 @@ class About extends React.Component {
             message: `发现新版本 ${res.version}`,
             icon: <SmileTwoTone />,
             btn: <a target="_blank" rel="noopener noreferrer" href="https://spug.dev/docs/update-version/">如何升级？</a>,
-            description: <pre style={{lineHeight: '30px'}}>{res.content}</pre>
+            description: <pre style={{lineHeight: '30px'}}>{res.content}<br/>{res.extra}</pre>
+          })
+        } else if (res.extra) {
+          notification.open({
+            key: 'new_version',
+            duration: 0,
+            top: 88,
+            message: `已是最新版本`,
+            icon: <SmileTwoTone />,
+            btn: <Button type="link" onClick={() => notification.close('new_version')}>知道了</Button>,
+            description: <pre style={{lineHeight: '30px'}}>{res.extra}</pre>
           })
         }
       })