improve display_via_github and display_as values

Fixed some inconsistent use of display_via_github and display_as values.

1995/dodsond1/index.html

@@ -192,7 +192,7 @@ code being inside the <code>()</code>’s of one of the 6 <code>orfa</code> loop
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/dodsond1/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/dodsond1/dodsond1.orig.c">dodsond1.orig.c</a> - original source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/dodsond1/try.sh">try.sh</a> - how to run</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/dodsond1/try.this.txt">try.this.txt</a> - sample input</li>
+<li><a href="try.this.txt">try.this.txt</a> - sample input</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>