docs: fix outdated links

packages/docs/docs/guide/README.md

@@ -32,7 +32,7 @@ It is worth noting that during the `prepare` phase, VuePress does the following:
 - [Built-in markdown extensions](markdown.md) optimized for technical documentation
 - [Ability to leverage Vue inside markdown files](using-vue.md)
 - [Vue-powered custom theme system](../theme/README.md)
-- [Automatic Service Worker generation](../config/README.md#serviceworker)
+- [Automatic Service Worker generation](../plugin/official/plugin-pwa.md)
 - [Google Analytics Integration](../config/README.md#ga)
 - ["Last Updated" based on Git](../theme/default-theme-config.md#last-updated)
 - [Multi-language support](i18n.md)

packages/docs/docs/zh/guide/README.md

@@ -15,7 +15,7 @@ VuePress 由两部分组成：一部分是支持用 Vue 开发主题的极简静
 - 为技术文档而优化的 [内置 Markdown 拓展](markdown.md)
 - [在 Markdown 文件中使用 Vue 组件的能力](using-vue.md)
 - [Vue 驱动的自定义主题系统](../theme/README.md)
-- [自动生成 Service Worker](../config/README.md#serviceworker)
+- [自动生成 Service Worker](../plugin/official/plugin-pwa.md)
 - [Google Analytics 集成](../config/README.md#ga)
 - [基于 Git 的 “最后更新时间”](../theme/default-theme-config.md#最后更新时间)
 - [多语言支持](i18n.md)