update docs

Author: wu-clan

docs/.vuepress/theme.ts

@@ -35,7 +35,6 @@ export const myTheme: Theme = plumeTheme({
     navbarSocialInclude: ['github', 'bilibili'],
     editLinkText: '编辑此页面',
     contributors: false,
-    lastUpdated: false,
     footer: {
         message: 'FastAPI 最佳架构 & MIT LICENCE',
         copyright: 'Copyright © 2023-present FastAPI Practices'