Add lefebvreart

Liste_etudiants.csv

@@ -189,7 +189,7 @@ b.laurent@student.uclouvain.be,"Laurent, Benoît",Oui
 pablo.laviolette@student.uclouvain.be,"Laviolette, Pablo",Oui
 delphine.leclercq@student.uclouvain.be,"Leclercq, Delphine",Non
 arnaud.lefebvre@student.uclouvain.be,"Lefebvre, Arnaud",Oui
-art.lefebvre@student.uclouvain.be,"Lefebvre, Arthur",Non
+art.lefebvre@student.uclouvain.be,"Lefebvre, Arthur",Oui
 r.lefebvre@student.uclouvain.be,"Lefèbvre, Romain",Non
 emma.legrand@student.uclouvain.be,"Legrand, Emma",Oui
 g.lejeune@student.uclouvain.be,"Lejeune, Guillaume",Oui