improved indentation and whitespace for markdown code blocks

All code blocks in markdown have been intended by at least 4 spaces.

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 from "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`.

Fixed excess whitespace after list Author on entry `index.html` page.

Changed `bin/output-index-author.sh` VERSION from "1.5.2 2024-03-26"
to "1.6 2024-03-31".

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

TODO: Fix the problem of the initial line of code being extra intended.
TODO: Fix excess whitespace around code that is inline.

1998/dloweneil/index.html

@@ -135,8 +135,7 @@
 Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
 <br><br></li>
 <li>Name: <a href="../../authors.html#Neil_Mix">Neil Mix</a><br>
-Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em>
-<br><br></li>
+Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></li>
 </ul>
 
 <!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -145,17 +144,16 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em>
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <h2 id="to-build">To build:</h2>
-<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> all</span></code></pre></div>
+<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">make</span> all</span></code></pre></div>
 <p>There is an alternate version available that has a key configuration that will
 be more familiar to vi(m) users and also allows one to quit. See <a href="#alternate-code">alternate
 code</a> below.</p>
 <h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
 <p>The current status of this entry is:</p>
-<pre><code>STATUS: missing or dead link - please provide them</code></pre>
+<pre><code>    STATUS: missing or dead link - please provide them</code></pre>
 <p>For more detailed information see <a href="../../bugs.html#1998_dloweneil">1998 dloweneil bugs</a>.</p>
 <h2 id="to-use">To use:</h2>
-<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a></span>
-<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./pootris</span> [X size of board] [Y size of board]</span></code></pre></div>
+<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./pootris</span> [X size of board] [Y size of board]</span></code></pre></div>
 <p>Pressing <code>a</code> moves the current letter position counterclockwise/anticlockwise
 (a)round the border of the playing field.</p>
 <p>Pressing <code>s</code> moves the current letter one position clockwise around the border
@@ -167,18 +165,18 @@ counterclockwise/anticlockwise <code>h</code> does as well; and in addition to <
 clockwise <code>l</code> does as well. Instead of using <code>d</code> to drop the letter you can do
 <code>j</code> or space. Finally to quit this version you can press <code>q</code>.</p>
 <h3 id="alternate-build">Alternate build:</h3>
-<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> alt</span></code></pre></div>
+<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">make</span> alt</span></code></pre></div>
 <h3 id="alternate-use">Alternate use:</h3>
-<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./pootris.alt</span> [X size of board] [Y size of board]</span></code></pre></div>
+<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./pootris.alt</span> [X size of board] [Y size of board]</span></code></pre></div>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>Read the authors’ remarks below to find out how to play. We believe that your
 experience may mirror one of our experiences:</p>
-<pre><code>Originally, I didn&#39;t appreciate the game.  Then I actually read the
-description of the controls.  I started playing.  I struggled.
-I spelled my first &quot;poot&quot;.  I was hooked ...</code></pre>
+<pre><code>    Originally, I didn&#39;t appreciate the game.  Then I actually read the
+    description of the controls.  I started playing.  I struggled.
+    I spelled my first &quot;poot&quot;.  I was hooked ...</code></pre>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <h3 id="usage">Usage</h3>
-<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./pootris</span> [X size of board] [Y size of board]</span></code></pre></div>
+<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./pootris</span> [X size of board] [Y size of board]</span></code></pre></div>
 <h3 id="synopsis">Synopsis</h3>
 <p>The object of this game is to spell <code>POOT</code> as much as possible. There
 is no time pressure. You’re given one letter at a time (sort of randomly