Retrieves a Retrospective Template

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

{
  "data": {
    "id": "9f624ac0-f82d-4ce0-a144-8f5f88199ff2",
    "type": "post_mortem_templates",
    "attributes": {
      "name": "Ab quas perspiciatis est.",
      "slug": "ab-quas-perspiciatis-est",
      "format": "html",
      "default": false,
      "content": "",
      "created_at": "2025-09-13T12:00:31.872-07:00",
      "updated_at": "2025-09-13T12:00:31.879-07:00"
    }
  }
}