Small about-fedora change

I made one more very small change in about-fedora -- our RSS feed aggregator should be called "Planet Fedora" to match the rest of our web sites and documents. Sorry about the extra string. The statistics are looking GREAT -- you guys are amazing! -- Paul W. Frields, RHCE http://paul.frields.org/ gpg fingerprint: 3DA6 A0AC 6D58 FEC4 0233 5906 ACDB C937 BD11 3717 Fedora Project: http://fedoraproject.org/wiki/PaulWFrields irc.freenode.net: stickster @ #fedora-docs, #fedora-devel, #fredlug