improve display_via_github and display_as values

Fixed some inconsistent use of display_via_github and display_as values.

2004/newbern/index.html

@@ -194,7 +194,7 @@ Decryption is left as an exercise for the reader.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/newbern/newbern.c">newbern.c</a> - entry source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/newbern/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/newbern/newbern.orig.c">newbern.orig.c</a> - original source</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/newbern/newbern.dat">newbern.dat</a> - sample input</li>
+<li><a href="newbern.dat">newbern.dat</a> - sample input</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/newbern/try.sh">try.sh</a> - how to run</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>