Retrieves a Retrospective Template

curl --request GET \
  --url https://api.rootly.com/v1/post_mortem_templates/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "74911230-c644-4fba-88fb-6d9c8ae76f29",
    "type": "post_mortem_templates",
    "attributes": {
      "name": "Similique accusamus placeat quo.",
      "slug": "similique-accusamus-placeat-quo",
      "format": "html",
      "default": false,
      "content": "",
      "created_at": "2025-12-24T09:27:38.283-08:00",
      "updated_at": "2025-12-24T09:27:38.288-08:00"
    }
  }
}