docs: hoist last update to README

ulivz · ulivz · commit 9e3fe81c7aea · 2018-05-27T23:24:31.000+08:00
diff --git a/README.md b/README.md
@@ -23,6 +23,7 @@ https://vuepress.vuejs.org/
 - [Vue-powered custom theme system](https://vuepress.vuejs.org/guide/custom-themes.html)
 - [Service Worker Integration](https://vuepress.vuejs.org/config/#serviceworker)
 - [Google Analytics Integration](https://vuepress.vuejs.org/config/#ga)
+- ["Last Updated" based on Git](https://vuepress.vuejs.org/default-theme-config/#last-updated)
 - [Multi-Language Support](https://vuepress.vuejs.org/guide/i18n.html)
 - A default theme with:
   - Responsive layout
diff --git a/docs/guide/README.md b/docs/guide/README.md
@@ -19,6 +19,7 @@ Each markdown file is compiled into HTML with [markdown-it](https://github.com/m
 - [Vue-powered custom theme system](./custom-themes.md)
 - [Automatic Service Worker generation](../config/#serviceworker)
 - [Google Analytics Integration](../config/#ga)
+- ["Last Updated" based on Git](../default-theme-config/README.md#last-updated)
 - [Multi-language support](./i18n.md)
 - A default theme with:
   - Responsive layout
diff --git a/docs/zh/default-theme-config/README.md b/docs/zh/default-theme-config/README.md
@@ -293,7 +293,7 @@ module.exports = {
 
 更多选项请参考 [Algolia DocSearch 的文档](https://github.com/algolia/docsearch#docsearch-options)。
 
-## 最近更新
+## 最后更新时间
 
 你可以通过 `themeConfig.lastUpdated` 选项来获取每个文件最后一次 `git` 提交的 UNIX 时间戳(ms)，同时它将以合适的日期格式显示在每一页的底部：
 
diff --git a/docs/zh/guide/README.md b/docs/zh/guide/README.md
@@ -17,6 +17,7 @@ VuePress 由两部分组成：一部分是支持用 Vue 开发主题的极简静
 - [Vue 驱动的自定义主题系统](./custom-themes.md)
 - [自动生成 Service Worker](../config/#serviceworker)
 - [Google Analytics 集成](../config/#ga)
+- [基于 Git 的 “最后更新时间”](../default-theme-config/README.md#最后更新时间)
 - [多语言支持](./i18n.md)
 - 默认主题包含：
   - 响应式布局
