set pandoc 8 character tab stops for HTML conversion

We add `--tab-stop=8` to all `pandoc(1)` executions in order to set
a better tab stop indentation, especially for tab intended code blocks.

Changed `bin/pandoc-wrapper.sh` VERSION "1.5.3 2024-03-26"
to "1.6 2024-03-31".

Fixed `1991/brnstnd/sorta.README.md` so that the sorta code
is code blocks.

Removed unneeded paragraph group in copyright in `inc/footer.default.html`.

Performed `make www` to perform the above and test under macOS.

1994/index.html

@@ -175,7 +175,7 @@ able to link to the other IOCCC judges by some form of a video link</li>
 <li>loves chocolate and other fine foods :-)</li>
 </ul>
 <p>If you think this may be you, send an email before 31 Dec 1995, to:</p>
-<pre><code>judges@toad.com     (use the Subject: 3rd judge)</code></pre>
+<pre><code>judges@toad.com         (use the Subject: 3rd judge)</code></pre>
 <p>Include in your message:</p>
 <ul>
 <li>Your name, address, email address and phone number</li>
@@ -190,7 +190,7 @@ email at the above address.</p>
 If you have a well known stable site that would be willing to give us
 access to put up some IOCCC html pages, please send an email (say prior
 to 31 Dec 1995) to:</p>
-<pre><code>judges@toad.com     (use the Subject: www site)</code></pre>
+<pre><code>judges@toad.com         (use the Subject: www site)</code></pre>
 <p>describing your site and any other appropriate comments. Thanks!</p>
 <h2 id="a-few-notes-regarding-future-contests">A few notes regarding future contests</h2>
 <p>Due to changes in the USENIX conference calendar, the 1995 contest will
@@ -234,11 +234,11 @@ Dessert: Homemade chocolate/pecan brownies, fruit</p>
 
     You are free to share and adapt this file under the terms of this license:
 
-    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-    https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 
@@ -299,7 +299,7 @@ Dessert: Homemade chocolate/pecan brownies, fruit</p>
 <div class="footer">
   <h2>Copyright and CC BY-SA 4.0 License</h2>
   <p>This file and web page is:</p>
-  <blockquote><p><b>Copyright &copy; 1984-2024 by Landon Curt Noll. All Rights Reserved.</b></p></blockquote>
+  <blockquote><b>Copyright &copy; 1984-2024 by Landon Curt Noll. All Rights Reserved.</b></blockquote>
   <p>You are free to share and adapt this file under the terms of this license:</p>
   <blockquote><b>Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)</b></blockquote>
   <p>For more information, see:</p>