[release-monitoring] Add link for packages on rpm fusion
    
    This will add clickable link to all RPM Fusion packages that have corresponding
    mapping in Fedora.
    
    Because the rpm fusion package database has free/nonfree in package path, this
    needs to be also reflected in package mapping, otherwise it will not work.
    
    Signed-off-by: Michal Konečný <mkonecny@redhat.com>