Retrieves a FormFieldPosition

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

{
  "data": {
    "id": "4b62886d-1758-4976-aff6-6999d13edf12",
    "type": "form_field_positions",
    "attributes": {
      "form_field_id": "f788ccbd-0ee5-49df-834b-7032bcf4dbb2",
      "form": "web_update_incident_form",
      "position": 1
    }
  }
}