feat: support currentLocale site config

Author: harlan-zw

module/src/runtime/plugin/defaults.ts

@@ -50,7 +50,7 @@ export default defineNuxtPlugin({
     useServerHead({
       templateParams: { site: { name: siteConfig.name, url: siteConfig.url }, separator: siteConfig.titleSeparator },
       // TODO integrate with nuxt/i18n
-      htmlAttrs: { lang: siteConfig.deaultLocale },
+      htmlAttrs: { lang: () => siteConfig?.currentLocale },
       titleTemplate: '%s %separator %site.name',
     })
 
@@ -79,7 +79,7 @@ export default defineNuxtPlugin({
       defineWebSite({
         name: () => siteConfig?.name || '',
         // TODO integrate with nuxt/i18n
-        inLanguage: () => siteConfig?.defaultLocale || '',
+        inLanguage: () => siteConfig?.currentLocale || '',
         description: () => siteConfig?.description || '',
       }),
       defineWebPage(),