:link: announcements: Fix broken URL
:link: announcements: Fix broken URL

For some reason, this link was broken. Might have been old cruft from
the RITlug website circa 2015.

Signed-off-by: Justin W. Flory <46f1a0bd5592a2f9244ca321b129902a06b53e03@jwf.io>

FOSSRIT/fossrit.github.io,FOSSRIT/fossrit.github.io,FOSSRIT/fossrit.github.io