Update the link to F-List to point to the current repository

Testing Done:
Ran locally.

Bugs closed: NEST-40

Reviewed at
title: Advisories
type: security
layout: advisories
weight: 100
This page lists all potential security vulnerabilities discovered since August
1st, 2004 in Pidgin (or Gaim), Finch, libpurple, or any official plugins
included with those programs.