correction: format fichers .py

src/cleaning.py

@@ -102,7 +102,7 @@ def main(filename: str | None = None) -> None:
         if len(argv) != 2:
             raise ValueError(f"Usage: {argv[0]} <filename.csv>")
         filename = argv[1]
-        
+
     cleaning: Cleaning = (
         Cleaning(filename)
         .drop_empty_appellation()