As reported in https://src.fedoraproject.org/rpms/fedora-release/pull-request/122 , with recent fedora-release, the VERSION and PRETTY_NAME fields in /etc/os-release for Fedora Editions no longer have the edition name in them - e.g. on Server they have changed from "33 (Server Edition)" and "Fedora 33 (Server Edition)" to "33 (Rawhide Prerelease)" and "Fedora 33 (Rawhide Prerelease)". sgallagh asked me to file a bug on this, so here it is!
Should be fixed by https://src.fedoraproject.org/rpms/fedora-release/pull-request/125
Built in Rawhide; should be fixed in the next compose.