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/buzzard.2/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Sean_Barrett">Sean Barrett</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 -->
@@ -142,37 +141,37 @@ 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 of this program. See <a href="#alternate-code">Alternate
 code</a> below for details.</p>
 <h2 id="to-use">To use:</h2>
 <p>First, you must make sure that <code>first</code> is made first (even though <code>make all</code>
 should make first first :-) ):</p>
-<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> first</span></code></pre></div>
+<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">make</span> first</span></code></pre></div>
 <p>Second:</p>
-<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="co"># get help:</span></span>
-<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> help <span class="kw">|</span> <span class="fu">cat</span> third help.th <span class="at">-</span> <span class="kw">|</span> <span class="ex">./first</span></span>
+<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="co"># get help:</span></span>
+<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a>    <span class="bu">echo</span> help <span class="kw">|</span> <span class="fu">cat</span> third help.th <span class="at">-</span> <span class="kw">|</span> <span class="ex">./first</span></span>
 <span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a></span>
-<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="co"># try out a demo:</span></span>
-<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a><span class="fu">cat</span> third demo5.th <span class="kw">|</span> <span class="ex">./first</span></span></code></pre></div>
+<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a>    <span class="co"># try out a demo:</span></span>
+<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a>    <span class="fu">cat</span> third demo5.th <span class="kw">|</span> <span class="ex">./first</span></span></code></pre></div>
 <p>Third:</p>
-<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">cat</span> third help.th <span class="at">-</span> <span class="kw">|</span> <span class="ex">./first</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="fu">cat</span> third help.th <span class="at">-</span> <span class="kw">|</span> <span class="ex">./first</span></span></code></pre></div>
 <p>NOTE: Wait until ‘Ok’ is printed and the type:</p>
-<pre><code>2 3 + . cr</code></pre>
+<pre><code>    2 3 + . cr</code></pre>
 <p>Yes you should really type the 2 letters: <code>cr</code>.</p>
 <p>Fourth:</p>
-<pre><code>Sorry, this is third!</code></pre>
+<pre><code>    Sorry, this is third!</code></pre>
 <h2 id="try">Try:</h2>
-<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">./try.sh</span></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">./try.sh</span></span></code></pre></div>
 <h2 id="alternate-code">Alternate code:</h2>
 <p>This alternate version, <a href="buzzard.2.alt.c">buzzard.2.alt.c</a>, does not contain a
 fix that the author notes in their remarks.</p>
 <h3 id="alternate-build">Alternate build:</h3>
-<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> alt</span></code></pre></div>
+<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">make</span> alt</span></code></pre></div>
 <h3 id="alternate-use">Alternate use:</h3>
 <p>Use <code>buzzard.2.alt</code> as you would <code>buzzard.2</code> above.</p>
 <h3 id="alternate-try">Alternate try:</h3>
-<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.alt.sh</span></span></code></pre></div>
+<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./try.alt.sh</span></span></code></pre></div>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>Have fun!</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
@@ -205,7 +204,7 @@ included, but it only works on ASCII systems.</p>
 <p>Do not expect to be able to do anything interesting with <code>first</code>.</p>
 <p>To do something interesting, you need to feed <code>first</code> the file
 <a href="third">third</a> first. In unix, you can do</p>
-<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cat</span> third help.th <span class="at">-</span> <span class="kw">|</span> <span class="ex">./first</span></span></code></pre></div>
+<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">cat</span> third help.th <span class="at">-</span> <span class="kw">|</span> <span class="ex">./first</span></span></code></pre></div>
 <p>to do this. Hopefully most operating systems will provide a way to do this. It
 may take some time for this to complete (I seem to remember it taking several
 minutes on an 8086 PC); <code>THIRD</code> will prompt you when it is finished. The file
@@ -284,18 +283,18 @@ take a significant amount of time in THIRD.</p>
 <a href="https://en.wikipedia.org/wiki/Forth_(programming_language)">FORTH</a> code
 (<code>first</code> has no way of knowing if keyboard input is waiting, so it can’t actually prompt
 you in a normal way. It only prints <code>'Ok.'</code> after you define a word).</p>
-<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="ex">2</span> 3 + . cr</span></code></pre></div>
+<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">2</span> 3 + . cr</span></code></pre></div>
 <p>(which adds 2 and 3, and print the result and a newline.)</p>
 <p>THIRD responds:</p>
-<pre><code>5</code></pre>
+<pre><code>    5</code></pre>
 <p>Now try:</p>
-<pre><code>: test 11 1 do i . loop cr ;
-test</code></pre>
+<pre><code>    : test 11 1 do i . loop cr ;
+    test</code></pre>
 <p>and THIRD responds</p>
-<pre><code>1 2 3 4 5 6 7 8 9 10</code></pre>
+<pre><code>    1 2 3 4 5 6 7 8 9 10</code></pre>
 <p>When in <code>THIRD</code>, you can see how much space you’re currently
 using by typing:</p>
-<pre><code>here .</code></pre>
+<pre><code>    here .</code></pre>
 <p>The number THIRD replies with is the number of machine words (<code>int</code>s) that the
 dictionary (the first code) takes up, plus the 512 <code>int</code>s for the return stack.
 If you compile the basic THIRD system without the help word (strings take up one