Rebuild .entry.json and index.html files

2020/otterness/index.html

@@ -532,8 +532,8 @@ very thoroughly).</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness/prog.orig.c">prog.orig.c</a> - original source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/otterness/try.sh">try.sh</a> - script to try entry</li>
-<li><a href="cvikl.mid">cvikl.mid</a> - sample input sound</li>
-<li><a href="entertainer.mid">entertainer.mid</a> - sample input sound</li>
+<li><a href="cvikl.mid">cvikl.mid</a> - sample MIDI file</li>
+<li><a href="entertainer.mid">entertainer.mid</a> - sample MIDI file</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>