Retrieves a Retrospective Template

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

{
  "data": {
    "id": "5c142003-9c12-40ce-a9ed-cb8f5bd25663",
    "type": "post_mortem_templates",
    "attributes": {
      "name": "Dolorum harum iusto ut.",
      "slug": "dolorum-harum-iusto-ut",
      "format": "html",
      "default": false,
      "content": "",
      "content_html": null,
      "content_json": null,
      "created_at": "2026-02-11T23:42:49.106-08:00",
      "updated_at": "2026-02-11T23:42:49.119-08:00"
    }
  }
}