add historical update to the historical mirror note

2004/README.md

@@ -16,7 +16,16 @@ local compiler.
 ### Historical note:
 
 The IOCCC has a website and now has a number of international mirrors.
-The primary website can be found at <https://www.ioccc.org/>.
+The primary website can be found at [www.ioccc.org](https://www.ioccc.org).
+
+
+### Historical update:
+
+The IOCCC website once had a number of
+[international mirrors](https://web.archive.org/web/20201030210517/https://www.ioccc.org/mirror.html).
+As of 2020 Dec 29, [GitHub](https://www.github.com) serves as the distributed server farm for the
+[IOCCC winner repo](https://github.com/ioccc-src/winner) that GitHub renders as
+[Official IOCCC web site - www.ioccc.org](https://www.ioccc.org).
 
 
 ## Remarks on some of the entries

2004/index.html

@@ -403,7 +403,13 @@ yours is lacking, you may need to compile using <code>gcc</code> instead of your
 local compiler.</p>
 <h3 id="historical-note">Historical note:</h3>
 <p>The IOCCC has a website and now has a number of international mirrors.
-The primary website can be found at <a href="https://www.ioccc.org/" class="uri">https://www.ioccc.org/</a>.</p>
+The primary website can be found at <a href="https://www.ioccc.org">www.ioccc.org</a>.</p>
+<h3 id="historical-update">Historical update:</h3>
+<p>The IOCCC website once had a number of
+<a href="https://web.archive.org/web/20201030210517/https://www.ioccc.org/mirror.html">international mirrors</a>.
+As of 2020 Dec 29, <a href="https://www.github.com">GitHub</a> serves as the distributed server farm for the
+<a href="https://github.com/ioccc-src/winner">IOCCC winner repo</a> that GitHub renders as
+<a href="https://www.ioccc.org">Official IOCCC web site - www.ioccc.org</a>.</p>
 <h2 id="remarks-on-some-of-the-entries">Remarks on some of the entries</h2>
 <p>We believe you will be impressed with this year’s winning entries. The <a href="gavin/index.html">Best of
 Show</a> is a fine example of obfuscation. But don’t ignore the