i18n

resource/locales/en-US/translation.json

@@ -679,7 +679,8 @@
     "recently_created_n_draft_num_desc": "Number of recently created pages and drafts displayed on user page",
     "update_layout_success": "Succeeded to update layout",
     "update_behavior_success": "Succeeded to update behavior",
-    "update_function_success": "Succeeded to update function"
+    "update_function_success": "Succeeded to update function",
+    "update_highlight_success": "Succeeded to update code highlight"
   },
 
   "user_management": {

resource/locales/ja/translation.json

@@ -663,7 +663,8 @@
     "recently_created_n_draft_num_desc": "ホーム画面の Recently Created での、1ページの表示数を設定します。",
     "update_layout_success": "レイアウトを更新しました",
     "update_behavior_success": "挙動を更新しました",
-    "update_function_success": "機能を更新しました"
+    "update_function_success": "機能を更新しました",
+    "update_highlight_success": "コードハイライトを更新しました"
   },
 
   "user_management": {

src/client/js/components/Admin/Customize/CustomizeHighlightSetting.jsx

@@ -27,8 +27,7 @@ class CustomizeHighlightSetting extends React.Component {
 
     try {
       // await adminCustomizeContainer.updateCustomizeFunction();
-      // TODO i18n
-      toastSuccess(t('customize_page.update_function_success'));
+      toastSuccess(t('customize_page.update_highlight_success'));
     }
     catch (err) {
       toastError(err);