feat(FT): add format date comment

pipeline/dags/dag_utils/sources/france_travail.py

@@ -45,6 +45,15 @@ def same_values_every_day(formated_horaires: Dict[str, str]) -> bool:
 def format_date_ft_to_open_street_map(
     horaires: Optional[List[Dict[str, Any]]],
 ) -> Optional[str]:
+    """Format horaires from France Travail to Open Street Map format
+    cf: https://francetravail.io/data/api/referentiel-agences?tabgroup-api=documentation&doc-section=api-doc-section-caracteristiques
+    cf: https://wiki.openstreetmap.org/wiki/Key:opening_hours
+    The object horaires also contains information on openning hours for appointment
+    only.
+    We could added it in this format for example:
+    "Mo 12:00-14:00 open "Sans RDv", Mo 14:00-16:00 open "Sur RDV seulement"; PH off"
+    Because of the complexity of the format, we will not implement it for now.
+    """
     if not horaires:
         return None