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.

2004/burley/index.html

@@ -153,15 +153,15 @@ information on how to play.</p>
 <p>This is a <a href="https://en.wikipedia.org/wiki/Draw_poker">draw poker</a> program. You
 start with $100. Input alternates between your bet and which cards to keep.
 Example:</p>
-<pre><code>5       &lt;== you enter a bet of $5 (defaults to $1)
-J Q J 9 5   &lt;== your hand is Jack of Clubs, Queen of Hearts,
-C H D S C       Jack of Diamonds, 9 of Spades, 5 of Clubs
-123     &lt;== you enter which cards you want to keep
-            (enter 0 to 5 digits between 1 and 5)
-J Q J J Q   &lt;== your new hand is Jack of Clubs, Queen of Hearts,
-C H D S C       Jack of Diamonds, Jack of Spaces, Queen of clubs
-$145 (45)   &lt;== Your new balance is now $145.  You had a Full House
-            so your payoff is 9 times your bet == 45</code></pre>
+<pre><code>5               &lt;== you enter a bet of $5 (defaults to $1)
+J Q J 9 5       &lt;== your hand is Jack of Clubs, Queen of Hearts,
+C H D S C           Jack of Diamonds, 9 of Spades, 5 of Clubs
+123             &lt;== you enter which cards you want to keep
+                    (enter 0 to 5 digits between 1 and 5)
+J Q J J Q       &lt;== your new hand is Jack of Clubs, Queen of Hearts,
+C H D S C           Jack of Diamonds, Jack of Spaces, Queen of clubs
+$145 (45)       &lt;== Your new balance is now $145.  You had a Full House
+                    so your payoff is 9 times your bet == 45</code></pre>
 <p>The payout is according to “Vegas rules”:</p>
 <pre><code>Straight Flush     50 times your bet
 Four of a Kind     25 times your bet
@@ -194,11 +194,11 @@ statements such as <code>if</code>, <code>for</code>, <code>do</code>, <code>whi
 
     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/
 
 -->
 
@@ -260,7 +260,7 @@ statements such as <code>if</code>, <code>for</code>, <code>do</code>, <code>whi
 <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>