Fix a typo in last release announcement.
Fix a typo in last release announcement.

svn path=/trunk/; revision=503

jku/rygel,Tarnyko/rygel,Pelagicore/Media-Manager-Rygel-patched,luisbg/rygel,Tarnyko/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,Pelagicore/Media-Manager-Rygel-patched,jku/rygel,GNOME/rygel,GNOME/rygel