Update app.organicmaps.yml - NonFreeNet AF (downloads maps from hardcoded servers)

OrganicMaps downloads maps data from hardcoded servers (cdn*.organicmaps.app) which are not user-configurable.

(Just like e.g. StreetComplete or Wikipedia app have same #NonFreeNet AF for also using free data but from hardcoded servers).

Might possibly be changed to #TetheredNet instead, once that becomes a thing.