feat: Refine reteival of multi-turn conversation #2362 (#2539)

### What problem does this PR solve?

feat: Refine reteival of multi-turn conversation #2362

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/zh-traditional.ts

@@ -404,6 +404,9 @@ export default {
       ttsTip: '是否用語音轉換播放語音，請先在設定裡面選擇TTS（語音轉換模型）。',
       relatedQuestion: '相關問題',
       answerTitle: '智慧回答',
+      multiTurn: '多輪對話優化',
+      multiTurnTip:
+        '在多輪對話的中，對去知識庫查詢的問題進行最佳化。會呼叫大模型額外消耗token。',
     },
     setting: {
       profile: '概述',