Fix IDE warnings (#12281)

### What problem does this PR solve?

As title

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

rag/utils/minio_conn.py

@@ -46,6 +46,7 @@ class RAGFlowMinio:
                 # pass original identifier forward for use by other decorators
                 kwargs['_orig_bucket'] = original_bucket
             return method(self, actual_bucket, *args, **kwargs)
+
         return wrapper
 
     @staticmethod
@@ -71,6 +72,7 @@ class RAGFlowMinio:
                     fnm = f"{orig_bucket}/{fnm}"
 
             return method(self, bucket, fnm, *args, **kwargs)
+
         return wrapper
 
     def __open__(self):