some fix for multijouer webform

config/sync/language/en/webform.webform.multi_joueur.yml

@@ -1 +1 @@
-elements: "address:\n  '#default_value':\n    additional_name: ''\n    dependent_locality: ''\n    administrative_area: ''\nvat_number:\n  '#title': 'VAT number'\n  '#description': 'Intra-community VAT number (to be completed only for professionals outside France)'\nphone:\n  '#title': Phone\nactions:\n  '#submit__label': 'Ask for a quote'\n"
+elements: "address:\n  '#default_value':\n    additional_name: ''\n    dependent_locality: ''\n    administrative_area: ''\nvat_number:\n  '#title': 'VAT number'\n  '#description': 'Intra-community VAT number (to be completed only for professionals outside France)'\nphone:\n  '#title': Phone\ncollaborateur:\n  '#title': Collaborators\nactions:\n  '#submit__label': 'Ask for a quote'\n"