fix: locals (#2108)

Author: Chasen-Zhang

docusaurus.config.ts

@@ -52,7 +52,7 @@ const config: Config = {
   // may want to replace "en" with "zh-Hans".
   i18n: {
     defaultLocale: lang,
-    locales: [lang],
+    locales: ['en', 'zh'],
     localeConfigs: {
       en: {
         label: "English",