Docs(locales): add chinese locale support (#2772)

docs/.vitepress/locales/index.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vitepress'
+import en_US from './en_US'
+import zh_CN from './zh_CN'
+
+export default defineConfig({
+  locales: {
+    root: {
+      label: 'English',
+      lang: en_US.lang,
+      themeConfig: en_US.themeConfig,
+      description: en_US.description
+    },
+    zh_CN: {
+      label: '简体中文',
+      lang: zh_CN.lang,
+      themeConfig: zh_CN.themeConfig,
+      description: zh_CN.description
+    }
+  }
+})