in user rdv search, fix link back to change service

Created by: adipasquale

https://trello.com/c/BwuMXjmA/951-usager-bug-retour-au-service

pour verifier cliquer sur modifier le service depuis https://demo-rdv-solidarites-pr743.osc-fr1.scalingo.io/lieux?search%5Bcity_code%5D=62040&search%5Bdepartement%5D=62&search%5Blatitude%5D=50.732087&search%5Blongitude%5D=2.318718&search%5Bmotif_name%5D=%C3%8Atre+rappel%C3%A9+par+la+PMI&search%5Bservice%5D=1&search%5Bwhere%5D=Arques%2C+62510%2C+62%2C+Pas-de-Calais%2C+Hauts-de-France

(quand je vois cette url je me dis que ca serait cool d'enlever le namespace [search] des parametres get de la search!)