hwcprimer/006chp5F.htm fix 5.2.4 distribution internal link error

Missing files:
http://web.archive.org/web/*/http://www.strategyplanet.com/homeworld/mma/primer/hwprimer/OnHelp.html/*
http://web.archive.org/web/*/http://www.strategyplanet.com/homeworld/mma/primer/hwprimer/Websites.html/*