PUT Update a template

Endpoint

PUT /api/v1/templates/{id}

Nom	Type	Required	Description
`id`	UUID	yes	ID du template

Field	Type	Required	Description
`name`	string	no	Nouveau nom
`body`	string	no	Nouveau body
`mediaUrl`	string	no	Nouvelle URL media

{
  "data": {
    "id": "tmpl_uuid",
    "variables": ["contact.firstName"]
  }
}