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.

1992/vern/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Vern_Paxson">Vern Paxson</a><br>
-Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
-<br><br></li>
+Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
 </ul>
 
 <!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,27 +141,27 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <!-- 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>
 <h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
 <p>The current status of this entry is:</p>
-<pre><code>STATUS: INABIAF - please **DO NOT** fix</code></pre>
+<pre><code>    STATUS: INABIAF - please **DO NOT** fix</code></pre>
 <p>For more detailed information see <a href="../../bugs.html#1992_vern">1992 vern 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 class="ex">./vern</span> 3        <span class="co"># &lt;-- default is 2</span></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">./vern</span> 3    <span class="co"># &lt;-- default is 2</span></span></code></pre></div>
 <h2 id="try">Try:</h2>
 <p>You might start off by giving the following input:</p>
-<pre><code>63 43
-76 55
-71 52
-67 57           # &lt;-- this may take a while</code></pre>
+<pre><code>    63 43
+    76 55
+    71 52
+    67 57               # &lt;-- this may take a while</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>The judges assume no responsibility for the obfuscated opening
 suggested above. :-)</p>
 <p>For a real quick game try:</p>
-<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">./vern</span></span>
+<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">./vern</span></span>
 <span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a></span>
-<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="ex">65</span> 55</span>
-<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a><span class="ex">66</span> 46</span></code></pre></div>
+<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a>    <span class="ex">65</span> 55</span>
+<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a>    <span class="ex">66</span> 46</span></code></pre></div>
 <p>NOTE: Move values must be restricted to the range 00 to 77.</p>
 <p>NOTE: Because some mailers have problems with the original winning source,
 a slightly modified version with shorter lines has been provided.</p>
@@ -226,8 +225,8 @@ at build time into much-needed text. Without this hack the program
 wouldn’t pass the character limit. A nice side effect is that the
 initial source is gloriously difficult to peruse. In particular, the Makefile
 does:</p>
-<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">sed</span> <span class="op">&lt;</span>vern.c <span class="st">&#39;s/{ /(/g;s/} /)/g;s/;       /#define /&#39;</span> <span class="kw">|</span> <span class="dt">\</span></span>
-<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a>    <span class="fu">sed</span> <span class="st">&#39;s/}      /=/g;s/{        /i/g&#39;</span> <span class="op">&gt;</span>vern.tmp.c</span></code></pre></div>
+<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">sed</span> <span class="op">&lt;</span>vern.c <span class="st">&#39;s/{ /(/g;s/} /)/g;s/;       /#define /&#39;</span> <span class="kw">|</span> <span class="dt">\</span></span>
+<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a>        <span class="fu">sed</span> <span class="st">&#39;s/}      /=/g;s/{        /i/g&#39;</span> <span class="op">&gt;</span>vern.tmp.c</span></code></pre></div>
 <p>and compiles <code>vern.tmp.c</code>.</p>
 <p>Second, the rather ho-hum step has been taking of naming each variable
 with a one or two letter identifier to render it meaningless (and save