update route

Author: waruqi

docs/.vitepress/theme/index.ts

@@ -9,6 +9,10 @@ const hashToRoute = {
   '#/about/sponsor': '/about/sponsor',
   '#/manual/project_target': '/api/description/project-target',
   '#/manual/project_target?id=phony': '/api/description/project-target#phony',
+  '/mirror/guide/project_examples': '/examples/cpp/basic',
+  '/mirror/guide/project_examples.html': '/examples/cpp/basic',
+  '/mirror/zh-cn/plugin/builtin_plugins': '/guide/extensions/builtin-plugins',
+  '/mirror/zh-cn/plugin/builtin_plugins.html': '/guide/extensions/builtin-plugins',
   '#/zh-cn/guide/quickstart': '/zh/guide/quick-start',
   '#/zh-cn/guide/installation': '/zh/guide/quick-start#installation',
   '#/zh-cn/guide/configuration': '/zh/guide/basic-commands/build-configuration',