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/en.ts

@@ -435,6 +435,9 @@ The above is the content you need to summarize.`,
         'To play the voice using voice conversion, please select TTS (speech conversion model) in the settings first.',
       relatedQuestion: 'Related question',
       answerTitle: 'R',
+      multiTurn: 'Multi-trun optimization',
+      multiTurnTip:
+        'In multi-round conversations, the query to the knowledge base is optimized. The large model will be called to consume additional tokens.',
     },
     setting: {
       profile: 'Profile',