Homepage: Updated links in introduction text

Assume that the reader has heard of operating systems such as Windows and
Mac OS X and instead of going to Wikipedia wishes to download the engine
for a particular platform.

web/plugins/z#home/html/introduction.html

@@ -2,6 +2,6 @@
 <p>The only thing you need is the data files from the original games &mdash; Doomsday takes care of the rest.</p>
 <h2>Why Choose Doomsday?</h2>
 <p>DOOM and its follow-ups are timeless classics that made the first-person shooter genre popular among gamers. Those fortunate enough to have experienced the games as they were released back in the early 1990s are sure to remember the fluid gameplay and the intense, immersive look and feel. However, by today's standards, the games look and sound dated. This is where Doomsday comes in: we have replaced much of the original engine's technology with a more modern implementation. We aim to provide the same thrilling gameplay experience for today's gamers.</p>
-<p>The Doomsday Engine runs on <a href="http://en.wikipedia.org/wiki/Microsoft_Windows" class="link-external" title="http://en.wikipedia.org/wiki/Microsoft_Windows" rel="nofollow">Windows</a>, <a href="http://en.wikipedia.org/wiki/Unix" class="link-external" title="http://en.wikipedia.org/wiki/Unix" rel="nofollow">Unix</a>, and <a href="http://en.wikipedia.org/wiki/Mac_os" class="link-external" title="http://en.wikipedia.org/wiki/Mac_os">Mac OS X</a> operating systems and is available for download free of charge.</p>
+<p>The Doomsday Engine runs on <a href="http://dengine.net/windows" title="Doomsday for Windows">Windows</a>, <a href="http://dengine.net/mac_os" title="Doomsday for Mac OS X 10.4+">Mac OS X</a>, and <a href="http://dengine.net/source">Unix</a> (including <a href="http://dengine.net/ubuntu" title="Doomsday for Ubuntu">Ubuntu</a>, <a href="http://dengine.net/linux" title="Doomsday for Linux">other Linux</a>) operating systems and is available for download free of charge.</p>
 <h2>A Decade Of Doomsday</h2>
-<p>Ten years ago on November 1st 1999 the first release of JHexen was made. Join us as we reflect on a <a href="/decade_of_doomsday" title="Decade Of Doomsday">Decade Of Doomsday</a>.</p>
+<p>The first release of JHexen was made on November 1st 1999. Join us as we reflect on a <a href="/decade_of_doomsday" title="Decade Of Doomsday">Decade Of Doomsday</a>.</p>