wrong/no signatures on FC packages

I just downloaded http://deb.torproject.org/torproject.org/rpm/fc15/tor-0.2.2.35-tor.0.rh15.i686.rpm{,.asc} and got an error when I checked the signature. However a head -n 1 *.asc reveals:

-----BEGIN PGP PUBLIC KEY BLOCK-----

and not -----BEGIN PGP SIGNATURE-----

I downloaded some asc-files and made a diff. They were all the same. So the asc-files are not signatures, but public keys.

So from my point of view those are no valid signatures. This should be corrected.