Retrieves a FormFieldPosition

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

{
  "data": {
    "id": "630e9f58-7c39-46cc-92a6-dad4ab782665",
    "type": "form_field_positions",
    "attributes": {
      "form_field_id": "514d87e1-2530-47be-a76d-b4529414248b",
      "form": "web_new_incident_form",
      "position": 1
    }
  }
}