Retrieves a custom form

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

{
  "data": {
    "id": "dd75a86a-e5e7-451f-ade6-be998779346f",
    "type": "custom_forms",
    "attributes": {
      "slug": "quasi-consequuntur-in-facere",
      "name": "Quasi consequuntur in facere.",
      "description": "Et quaerat qui accusamus.",
      "enabled": true,
      "command": "quasi-consequuntur-in-facere",
      "created_at": "2026-02-07T16:46:15.172-08:00",
      "updated_at": "2026-02-07T16:46:15.172-08:00"
    }
  }
}