Localized country names.

components/pages/WebsiteDetails.js

@@ -42,7 +42,7 @@ export default function WebsiteDetails({ websiteId, token }) {
   } = usePageQuery();
 
   const BackButton = () => (
-    <div className={styles.backButton}>
+    <div key="back-button" className={styles.backButton}>
       <Link
         key="back-button"
         href={router.pathname}