Good evening,
Welcome to editing 
Several people have written to you saying that you need the necessary permissions for this type of edit (which are obtained by making more minor edits); in your case, it is preferable to provide all the information in this discussion thread, and an editor, the closure team (or I myself) will take care of it.
To provide all the information, you can follow the example here: Avertissez-nous des événements à venir
(nature of the closure, dates, and sources (decrees, municipal information, organizers, etc.)).
We remain at your disposal to help,
See you soon.