The current pipewire-0.3.41-1.fc34 lacks any information about changes between versions. I discovered that upstream delivers NEWS file in its tarball. Please package NEWS file as a documentation.
This is fixed in pipewire-0.3.74-1.fc38.x86_64: $ rpm -ql pipewire|grep NEWS /usr/share/doc/pipewire/NEWS $ rpm -qf /usr/share/doc/pipewire/NEWS pipewire-0.3.74-1.fc38.x86_64