fix jest test i18n

Author: previ

src/i18n/index.js

@@ -24,5 +24,5 @@ const language = window.navigator.userLanguage || window.navigator.language;
 export default new VueI18n({
   locale: language,
   messages: locales,
-  fallbackLocale: "en"
+  fallbackLocale: 'en'
 });