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

2011/vik/index.html

@@ -193,7 +193,7 @@ initialization for?</p>
 <pre><code>    cc -S vik.c</code></pre>
 <p>and examine the resulting assembly file <code>vik.s</code>. On some platforms
 the assembly file is about 128MB in size!</p>
-<p>NOTE: The <a href="randowan.mod">randowan.mod</a> and <a href="mad_world.mod">mad_world.mod</a> files were
+<p>NOTE: The <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/vik/randowan.mod">randowan.mod</a> and <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2011/vik/mad_world.mod">mad_world.mod</a> files were
 created by <a href="http://www.translucentboy.com">Henrik Bertilsson</a> and are included
 with his permission.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>