docs: translate index.ts to spanish

docs/.vitepress/config/index.ts

@@ -4,6 +4,7 @@ import { en } from './en'
 import { zh } from './zh'
 import { pt } from './pt'
 import { ru } from './ru'
+import { es } from './es'
 
 export default defineConfig({
   ...shared,
@@ -12,6 +13,7 @@ export default defineConfig({
     zh: { label: '简体中文', ...zh },
     pt: { label: 'Português', ...pt },
     ru: { label: 'Русский', ...ru },
-    ko: { label: '한국어', lang: 'ko-KR', link: 'https://vitepress.vuejs.kr/' }
+    ko: { label: '한국어', lang: 'ko-KR', link: 'https://vitepress.vuejs.kr/' },
+    es: { label: 'Español', ...es }
   }
 })