Fix the bug that prevented modifying `dataset_ids` (#3784)

### What problem does this PR solve?

Fix the bug that prevented modifying `dataset_ids`.
#3772

### Type of change

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

Co-authored-by: liuhua <[email protected]>

api/apps/sdk/chat.py

@@ -161,7 +161,7 @@ def update(tenant_id,chat_id):
             return get_error_data_result("`datasets` can't be empty")
         if ids:
             for kb_id in ids:
-                kbs = KnowledgebaseService.accessible(kb_id=chat_id, user_id=tenant_id)
+                kbs = KnowledgebaseService.accessible(kb_id=kb_id, user_id=tenant_id)
                 if not kbs:
                     return get_error_data_result(f"You don't own the dataset {kb_id}")
                 kbs = KnowledgebaseService.query(id=kb_id)