fix markdown links to various sound files that use a %%TOKEN%%

thanks-for-help.html

@@ -4552,8 +4552,8 @@ J.R.R. Tolkien).</p>
 <h2 id="otterness"><a href="2020/otterness/index.html">2020/otterness</a></h2>
 <h3 id="source-code-prog.c-63">Source code: <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness//prog.c">prog.c</a></h3>
 </div>
-<p><a href="#cody">Cody</a> added the MIDI files <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness/cvikl.mid">cvikl.mid</a> and
-<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness/entertainer.mid">entertainer.mid</a> from the URLs we suggested so
+<p><a href="#cody">Cody</a> added the MIDI files <a href="2020/otterness/cvikl.mid">cvikl.mid</a> and
+<a href="2020/otterness/entertainer.mid">entertainer.mid</a> from the URLs we suggested so
 that one need not download them and to make sure they can always be obtained
 even if the domain or link goes dead.</p>
 <p>Cody also added the <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness/try.sh">try.sh</a> script.</p>