Fix:Discrepancy between Document.list_chunks() API documentation and implementation (#7575)

### What problem does this PR solve?


Close #7567

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/apps/sdk/doc.py

         required: false
         default: 30
         description: Number of items per page.
+      - in: query
+        name: id
+        type: string
+        required: false
+        default: ""
+        description: Chunk Id.
       - in: header
         name: Authorization
         type: string

sdk/python/ragflow_sdk/modules/document.py

         except json.JSONDecodeError:
             return res.content
 
-    def list_chunks(self, page=1, page_size=30, keywords=""):
-        data = {"keywords": keywords, "page": page, "page_size": page_size}
+    def list_chunks(self, page=1, page_size=30, keywords="", id = ""):
+        data = {"keywords": keywords, "page": page, "page_size": page_size, "id": id}
         res = self.get(f'/datasets/{self.dataset_id}/documents/{self.id}/chunks', data)
         res = res.json()
         if res.get("code") == 0: