fix internal links in entry index.html from 1984 thru 2012

2005/anon/index.html

@@ -158,7 +158,7 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
 version</a> below. If your terminal has problems with the
 <code>stty(1)</code> commands try:</p>
 <pre><code>    make anon-no_stty</code></pre>
-<p>This will compile <a href="anon.c">anon.c</a> as <code>anon</code> to not use <code>stty(1)</code>.</p>
+<p>This will compile <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2005/anon/anon.c">anon.c</a> as <code>anon</code> to not use <code>stty(1)</code>.</p>
 <h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
 <p>The current status of this entry is:</p>
 <pre><code>    STATUS: INABIAF - please **DO NOT** fix</code></pre>