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.

2015/schweikhardt/index.html

@@ -167,9 +167,9 @@ static source checkers.</p>
 <p>This tool references a problem that <a href="http://members.tip.net.au/~dbell/">David I.
 Bell</a> once described
 as having one of the largest “yummo quotients” in number theory:</p>
-<pre><code>             complexity of the solution
+<pre><code>                     complexity of the solution
 yummo quotient = -----------------------------------
-         complexity of the problem statement</code></pre>
+                 complexity of the problem statement</code></pre>
 <p><a href="https://en.wikipedia.org/wiki/Paul_Erdős">Erdős</a> privately told one of the IOCCC judges:</p>
 <blockquote>
 <p>Solving the <a href="https://en.wikipedia.org/wiki/Generalized_Riemann_hypothesis#Extended_Riemann_hypothesis_.28ERH.29">Generalized Riemann
@@ -342,18 +342,18 @@ acid</a>):</p>
     sec Selenocysteine
     val Valine
     trp Tryptophan
-    tyr Tyrosine
-    asx Asparagine or Aspartic acid
-    glx Glutamic acid or Glutamine
-    xle Leucine or Isoleucine
+        tyr     Tyrosine
+        asx     Asparagine or Aspartic acid
+        glx     Glutamic acid or Glutamine
+        xle     Leucine or Isoleucine
     unk Unknown</code></pre>
 <p>My own research results complete this list (not yet in Wikipedia due to
 the rule “<a href="https://en.wikipedia.org/wiki/Wikipedia:No_original_research">No original
 research</a>”):</p>
-<pre><code>and Androgynine
-xor Xenoricine
-not Notanamine
-tla Triletramine</code></pre>
+<pre><code>and     Androgynine
+xor     Xenoricine
+not     Notanamine
+tla     Triletramine</code></pre>
 <p>Interestingly, the TLI are the perfect mnemonics for C language source.
 For example, <code>met</code> is “<code>main()'s Exit Type</code>” (<code>int</code>), <code>ala</code> is “<code>A Large Algebraic</code>” (<code>bignum</code>), <code>ile</code> an “<code>Incremented Local Entity</code>” (index
 counter), <code>gly</code> means “<code>Grow Larger memorY</code>”, <code>gln</code> is “<code>Grown Larger Now</code>”
@@ -422,12 +422,12 @@ to be.</p>
 <span id="cb15-4"><a href="#cb15-4" aria-hidden="true" tabindex="-1"></a>   print n                       <span class="co">/* 2hx */</span></span>
 <span id="cb15-5"><a href="#cb15-5" aria-hidden="true" tabindex="-1"></a>   <span class="cf">while</span> <span class="op">(</span>n <span class="op">!=</span> <span class="dv">1</span><span class="op">)</span> <span class="op">{</span>              <span class="co">/* one */</span></span>
 <span id="cb15-6"><a href="#cb15-6" aria-hidden="true" tabindex="-1"></a>      <span class="cf">if</span> <span class="op">(</span>n is odd<span class="op">)</span> <span class="op">{</span>            <span class="co">/* odd */</span></span>
-<span id="cb15-7"><a href="#cb15-7" aria-hidden="true" tabindex="-1"></a>     m <span class="op">=</span> deep copy of n      <span class="co">/* cpy */</span></span>
-<span id="cb15-8"><a href="#cb15-8" aria-hidden="true" tabindex="-1"></a>     n <span class="op">&lt;&lt;=</span> <span class="dv">1</span>                 <span class="co">/* shl */</span></span>
-<span id="cb15-9"><a href="#cb15-9" aria-hidden="true" tabindex="-1"></a>     n <span class="op">+=</span> m                  <span class="co">/* add */</span></span>
-<span id="cb15-10"><a href="#cb15-10" aria-hidden="true" tabindex="-1"></a>     increment n             <span class="co">/* inc */</span></span>
+<span id="cb15-7"><a href="#cb15-7" aria-hidden="true" tabindex="-1"></a>         m <span class="op">=</span> deep copy of n      <span class="co">/* cpy */</span></span>
+<span id="cb15-8"><a href="#cb15-8" aria-hidden="true" tabindex="-1"></a>         n <span class="op">&lt;&lt;=</span> <span class="dv">1</span>                 <span class="co">/* shl */</span></span>
+<span id="cb15-9"><a href="#cb15-9" aria-hidden="true" tabindex="-1"></a>         n <span class="op">+=</span> m                  <span class="co">/* add */</span></span>
+<span id="cb15-10"><a href="#cb15-10" aria-hidden="true" tabindex="-1"></a>         increment n             <span class="co">/* inc */</span></span>
 <span id="cb15-11"><a href="#cb15-11" aria-hidden="true" tabindex="-1"></a>      <span class="op">}</span> <span class="cf">else</span> <span class="op">{</span>                   <span class="co">/* eve */</span></span>
-<span id="cb15-12"><a href="#cb15-12" aria-hidden="true" tabindex="-1"></a>     n <span class="op">&gt;&gt;=</span> <span class="dv">1</span>                 <span class="co">/* shr */</span></span>
+<span id="cb15-12"><a href="#cb15-12" aria-hidden="true" tabindex="-1"></a>         n <span class="op">&gt;&gt;=</span> <span class="dv">1</span>                 <span class="co">/* shr */</span></span>
 <span id="cb15-13"><a href="#cb15-13" aria-hidden="true" tabindex="-1"></a>      <span class="op">}</span></span>
 <span id="cb15-14"><a href="#cb15-14" aria-hidden="true" tabindex="-1"></a>      print n                    <span class="co">/* 2hx */</span></span>
 <span id="cb15-15"><a href="#cb15-15" aria-hidden="true" tabindex="-1"></a>  <span class="op">}</span></span>
@@ -765,11 +765,11 @@ memory resources with the <code>ulimit(1)</code> built-in of your shell.</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/
 
 -->
 
@@ -832,7 +832,7 @@ memory resources with the <code>ulimit(1)</code> built-in of your shell.</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>