fixin plugin yaml

plugin.yaml

@@ -2,10 +2,10 @@ Package:
  name: monster 
  type: detector
  groups: ijclab neutron
- url: https://gitlab.in2p3.fr/valerian.girard-alcindor/monster
+ url: https://gitlab.in2p3.fr/valerian.girard-alcindor/monster.git
  version: 0.1
  author: Valerian Girard Alcindor, Emile Cantacuzene, Nathan Giha, Leo Plagnol
- mail: 
+ mail:  
  description: Monster is a neutron detector array
  dependencies: root