chore: Update [source|destination]PartyId to remove `Id` suffix, set type to Party reference.
Created by: un-cefact-github-app[bot]
See https://github.com/uncefact/spec-untp/issues/314 for details.
I additionally renamed the field removing the Id
prefix because in json-ld, it is a Party
, just one which we're referencing with its ID (and from the JSON-LD point-of-view, you could use a full party object here, even though our generated schema won't allow it).