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

2005/mikeash/index.html

@@ -237,7 +237,7 @@ for running itself. To do the latter, try this:</p>
 lisp</a>. To do
 this, run the common lisp compiler and then type the following command:</p>
 <pre><code>    (load &quot;mikeash.c&quot;)</code></pre>
-<p>The source code of <a href="mikeash.c">mikeash.c</a> will be printed.</p>
+<p>The source code of <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2005/mikeashmikeash.c">mikeash.c</a> will be printed.</p>
 <h3 id="obfuscation">Obfuscation</h3>
 <p><code>Lispob</code> is obfuscated in several ways. First, it’s actually two programs
 in one, which actually share a small amount of code. Running a C code