fix many internal links

Fixed a number of internal links that need to
go to the GitHub site.

Ran `make www` to perform the above.

1984/mullender/index.html

@@ -456,8 +456,8 @@ favorite entries!</p>
 <p>In 2023 remarks were discovered from <a href="../../authors.html#Sjoerd_Mullender">Sjoerd
 Mullender</a>, one of the authors, and so was the
 program that was used by the authors to generate the array that he referred to.
-Because <a href="a.out.h">a.out.h</a>, which <a href="gentab.c">gentab.c</a> uses, is not available in
-all systems (like macOS) and more importantly because we wanted it to be as
+Because <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/a.out.h">a.out.h</a>, which <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/gentab.c">gentab.c</a> uses,
+is not available in all systems (like macOS) and more importantly because we wanted it to be as
 close to as the original as possible we used a copy of
 <a href="https://raw.githubusercontent.com/dspinellis/unix-history-repo/Research-Release/usr/include/a.out.h" class="uri">https://raw.githubusercontent.com/dspinellis/unix-history-repo/Research-Release/usr/include/a.out.h</a>
 in the <em>fabulous</em> <a href="https://github.com/dspinellis/unix-history-repo/tree/Research-Release">Unix History
@@ -661,7 +661,7 @@ formats for each constant in the resulting array, and we wanted to choose the
 format randomly. So we wrote a program to choose an appropriate format at
 random. The program we wrote for that follows. This program actually also
 extracted the machine code from the object file.</p>
-<p>NOTE from judges: see <a href="gentab.c">gentab.c</a> for a copy of this file that can be
+<p>NOTE from judges: see <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1984/mullender/gentab.c">gentab.c</a> for a copy of this file that can be
 compiled in modern systems.</p>
 <pre><code>    #include &lt;stdio.h&gt;
     #include &lt;a.out.h&gt;