Expose document format Orgs
Expose document format Orgs

This commit exposes the `content_id` of each of the Organisations listed
in the JSON schema for the Finders. This will be used to limit access to
each format to that list of Organisations.

alphagov/specialist-publisher-rebuild,alphagov/specialist-publisher,alphagov/specialist-publisher-rebuild,alphagov/specialist-publisher,alphagov/specialist-publisher-rebuild,alphagov/specialist-publisher-rebuild,alphagov/specialist-publisher