Doc: fix review (details on usage of feed_info fields)
Doc: fix review (details on usage of feed_info fields)

Tisseo/navitia,patochectp/navitia,xlqian/navitia,Tisseo/navitia,CanalTP/navitia,pbougue/navitia,CanalTP/navitia,kinnou02/navitia,CanalTP/navitia,xlqian/navitia,patochectp/navitia,patochectp/navitia,CanalTP/navitia,pbougue/navitia,xlqian/navitia,xlqian/navitia,Tisseo/navitia,patochectp/navitia,pbougue/navitia,Tisseo/navitia,kinnou02/navitia,pbougue/navitia,kinnou02/navitia,CanalTP/navitia,Tisseo/navitia,kinnou02/navitia,xlqian/navitia