change test files that do not end in .txt to view via GitHub

2013/endoh3/index.html

@@ -322,13 +322,13 @@ squashing them into just one <code>for</code>-loop.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/endoh3.c">endoh3.c</a> - entry source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/endoh3.orig.c">endoh3.orig.c</a> - original source</li>
-<li><a href="flea-waltz.abc">flea-waltz.abc</a> - sample input</li>
-<li><a href="menuet.abc">menuet.abc</a> - sample input</li>
-<li><a href="test.abc">test.abc</a> - sample input</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/flea-waltz.abc">flea-waltz.abc</a> - sample input</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/menuet.abc">menuet.abc</a> - sample input</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/test.abc">test.abc</a> - sample input</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/try.sh">try.sh</a> - how to run</li>
-<li><a href="twinkle.abc">twinkle.abc</a> - sample input</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/twinkle.abc">twinkle.abc</a> - sample input</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/wavify.rb">wavify.rb</a> - post process output to form a WAV sound file</li>
-<li><a href="yankee.abc">yankee.abc</a> - sample input</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/endoh3/yankee.abc">yankee.abc</a> - sample input</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>