style fixes

Author: vgvoleg

examples/query-service/basic_example.py

@@ -26,7 +26,6 @@ def main():
 
     pool.execute_with_retries("INSERT INTO example (key, value) VALUES (1, 'onepieceisreal');")
 
-
     def callee(session):
         print("=" * 50)
         for _ in session.execute("""delete from example;"""):

ydb/query/pool.py

@@ -117,7 +117,7 @@ def wrapped_callee():
                 return next_opt.result
 
     def execute_with_retries(
-            self, query: str, ddl: bool = False, retry_settings: RetrySettings = None, *args, **kwargs
+        self, query: str, ddl: bool = False, retry_settings: RetrySettings = None, *args, **kwargs
     ):
         retry_settings = RetrySettings() if retry_settings is None else retry_settings
         with self.checkout() as session: