feat: 补全西班牙语i18n翻译

- 修正西班牙语代码为es

src/plugins/i18n.ts

@@ -1,19 +1,19 @@
 import { createI18n } from 'vue-i18n'
 import en from '@/locale/en'
+import es from '@/locale/es'
 import ru from '@/locale/ru'
-import sp from '@/locale/sp.json'
 import zh from '@/locale/zh'
 
 type MessageSchema = typeof zh
-type AvailableLocales = 'zh' | 'en' | 'ru'
-
+type AvailableLocales = 'zh' | 'en' | 'ru' | 'es'
 export default createI18n<[MessageSchema], AvailableLocales>({
   legacy: false,
   locale: 'zh',
-  fallbackLocale: 'zh',
+  fallbackLocale: 'en',
   messages: {
     zh,
     en,
     ru,
+    es,
   },
 })