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.

2005/mikeash/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Michael_Ash">Michael Ash</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 -->
@@ -142,17 +141,17 @@ 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></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></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#2005_mikeash">2005 mikeash 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">./mikeash</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">./mikeash</span></span></code></pre></div>
 <p>NOTE: the author stated that they tested this under i386 machines but this works
 under 64-bit (x86_64, arm64) machines too.</p>
 <h2 id="try">Try:</h2>
-<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="ex">./try.sh</span></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="ex">./try.sh</span></span></code></pre></div>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>Having problems speaking code? Do you <a href="https://en.wikipedia.org/wiki/Lisp_(programming_language)">LISP</a>? Parenthetically
 speaking, this entry takes advantage of C99 features, while
@@ -176,12 +175,12 @@ constant string, due to different string escape semantics in C and Lisp, and
 some implicit integer-to-pointer conversions due to the implicitly-declared
 functions.</p>
 <p>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="bu">echo</span> <span class="st">&#39;(format t &quot;~s&quot; (+ 2 2 ))&#39;</span> <span class="kw">|</span> <span class="ex">./mikeash</span></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="bu">echo</span> <span class="st">&#39;(format t &quot;~s&quot; (+ 2 2 ))&#39;</span> <span class="kw">|</span> <span class="ex">./mikeash</span></span></code></pre></div>
 <p>You should see <code>4"</code> echoed on your command prompt. The <code>"</code> after the 4 and
 the lack of a newline are due to the somewhat broken implementation of
 the format function. More sophisticated arithmetic expressions may be
 used:</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="bu">echo</span> <span class="st">&#39;(format t &quot;~s&quot; (* (+ 2 2 ) (- 5 (/ 9 3 ))))&#39;</span> <span class="kw">|</span> <span class="ex">./mikeash</span></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="bu">echo</span> <span class="st">&#39;(format t &quot;~s&quot; (* (+ 2 2 ) (- 5 (/ 9 3 ))))&#39;</span> <span class="kw">|</span> <span class="ex">./mikeash</span></span></code></pre></div>
 <p>This evaluates the expression <code>(2+2) * (5 - 9/3)</code> giving the correct result,
 <code>8"</code> (with the same issue of no newline after the <code>"</code>). Note that due to the
 highly ad-hoc nature of the tokenizer, the spaces before the closing parentheses
@@ -220,12 +219,12 @@ nowhere near
 </ul>
 <p>Basically, the <a href="https://en.wikipedia.org/wiki/Lisp_(programming_language)">LISP</a> interpreter is good for some basic math operations, and
 for running itself. To do the latter, try this:</p>
-<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">./mikeash</span> <span class="op">&lt;</span> mikeash.c <span class="op">&gt;</span> mikeash2.c</span>
-<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="fu">diff</span> mikeash.c mikeash2.c</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">./mikeash</span> <span class="op">&lt;</span> mikeash.c <span class="op">&gt;</span> mikeash2.c</span>
+<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a>    <span class="fu">diff</span> mikeash.c mikeash2.c</span></code></pre></div>
 <p>The program can also be run from an implementation of <a href="https://en.wikipedia.org/wiki/Common_Lisp">common
 lisp</a>. To do
 this, run the common lisp compiler and then type the following command:</p>
-<pre><code>(load &quot;mikeash.c&quot;)</code></pre>
+<pre><code>    (load &quot;mikeash.c&quot;)</code></pre>
 <p>The source code of <a href="mikeash.c">mikeash.c</a> will be printed.</p>
 <h3 id="obfuscation">Obfuscation</h3>
 <p><code>Lispob</code> is obfuscated in several ways. First, it’s actually two programs