diff --git a/api/configs/feature/__init__.py b/api/configs/feature/__init__.py
index 9294b479e9..a3da5c1b49 100644
--- a/api/configs/feature/__init__.py
+++ b/api/configs/feature/__init__.py
@@ -667,6 +667,7 @@ class MailConfig(BaseSettings):
 class RagEtlConfig(BaseSettings):
     """
     Configuration for RAG ETL processes
+    """
 
     # TODO: This config is not only for rag etl, it is also for file upload, we should move it to file upload config
     ETL_TYPE: str = Field(