diff --git a/modelscope/hub/file_download.py b/modelscope/hub/file_download.py
index 7a731b79..380d2432 100644
--- a/modelscope/hub/file_download.py
+++ b/modelscope/hub/file_download.py
@@ -160,7 +160,7 @@ def model_file_download(
 def get_file_download_url(model_id: str, file_path: str, revision: str):
     """Format file download url according to `model_id`, `revision` and `file_path`.
     e.g., Given `model_id=john/bert`, `revision=master`, `file_path=README.md`,
-    the resulted download url is: https://modelscope.co/api/v1/models/john/bert/repo?Revision=master&FilePath=README.md
+    the resulted download url is: https://modelscope.cn/api/v1/models/john/bert/repo?Revision=master&FilePath=README.md
 
     Args:
         model_id (str): The model_id.
diff --git a/modelscope/models/nlp/dgds/backbone.py b/modelscope/models/nlp/dgds/backbone.py
index a4f9ef42..17e3c574 100644
--- a/modelscope/models/nlp/dgds/backbone.py
+++ b/modelscope/models/nlp/dgds/backbone.py
@@ -13,7 +13,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""PyTorch BERT model."""
 
 from __future__ import absolute_import, division, print_function
 import os.path