fix internal links in entry index.html from 1984 thru 2012

1998/schweikh3/index.html

@@ -192,7 +192,7 @@ the tool as well at <a href="http://www.schweikhardt.net/samefile" class="uri">h
 Thank God the IEEE does not standardize a coding style…</p>
 <h3 id="what-this-program-does">What this program does</h3>
 <p>This is best explained in the man page. The troff source for this
-man page can be found in the file <a href="samefile.1">samefile.1</a>. To render try:</p>
+man page can be found in the file <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schweikh3/samefile.1">samefile.1</a>. To render try:</p>
 <pre><code>    `man ./samefile.1</code></pre>
 <p>Otherwise:</p>
 <h3 id="samefile1-user-manuals-samefile1">SAMEFILE(1) User Manuals SAMEFILE(1)</h3>