Retrieves an incident event functionality

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

{
  "data": {
    "id": "767dd0d0-7f60-417f-80cc-683b99af6b19",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "b2b644e6-67b9-4194-9813-17a2a2c4ba3e",
      "functionality_id": "30df0140-b774-4e54-9700-45d38c722d66",
      "status": "partial_outage"
    }
  }
}