Retrieves a FormFieldPosition

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

{
  "data": {
    "id": "7b3de354-ab10-4547-8d78-7c6077c61bf4",
    "type": "form_field_positions",
    "attributes": {
      "form_field_id": "7e60c09c-94a1-42c7-9296-8284f32b934c",
      "form": "web_new_incident_form",
      "position": 1
    }
  }
}