Retrieves a custom form

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

{
  "data": {
    "id": "33c051a9-8036-49b1-9ed4-f3d3c3d98ded",
    "type": "custom_forms",
    "attributes": {
      "slug": "laboriosam-placeat-illum-eaque",
      "name": "Laboriosam placeat illum eaque.",
      "description": "Voluptates eaque minima consequatur.",
      "enabled": true,
      "command": "laboriosam-placeat-illum-eaque",
      "created_at": "2025-08-12T10:45:05.828-07:00",
      "updated_at": "2025-08-12T10:45:05.828-07:00"
    }
  }
}