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.

2012/deckmyn/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Alex_Deckmyn">Alex Deckmyn</a><br>
-Location: <a href="../../location.html#BE">BE</a> - <em>Kingdom of Belgium</em> (<em>Belgium</em>)
-<br><br></li>
+Location: <a href="../../location.html#BE">BE</a> - <em>Kingdom of Belgium</em> (<em>Belgium</em>)</li>
 </ul>
 
 <!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,15 +141,15 @@ Location: <a href="../../location.html#BE">BE</a> - <em>Kingdom of Belgium</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></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#2012_deckmyn">2012 deckmyn 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">./deckmyn</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">cat</span> deckmyn.c<span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">cat</span> musicfile.txt<span class="va">)</span><span class="st">&quot;</span> <span class="op">&gt;</span> sheetmusic.pbm</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">./deckmyn</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">cat</span> deckmyn.c<span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">cat</span> musicfile.txt<span class="va">)</span><span class="st">&quot;</span> <span class="op">&gt;</span> sheetmusic.pbm</span></code></pre></div>
 <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>The C of this entry is definitely sharp. The program cleverly uses its own
 source at runtime to define the notes, time signature and accidental bitmaps.</p>
@@ -169,14 +168,14 @@ is not done in the author’s remarks, however.</p>
 <p>You need the source code and example input (either one of the example files, or
 manual input as below) ready and a program capable of showing <a href="https://en.wikipedia.org/wiki/Netpbm">.pbm bitmap
 format</a> images.</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">./deckmyn</span> <span class="st">&quot;</span><span class="kw">`</span><span class="fu">cat</span> deckmyn.c<span class="kw">`</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="kw">`</span><span class="fu">cat</span> example_greensleeves<span class="kw">`</span><span class="st">&quot;</span> <span class="op">&gt;</span> greensleeves.pbm</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">./deckmyn</span> <span class="st">&quot;</span><span class="kw">`</span><span class="fu">cat</span> deckmyn.c<span class="kw">`</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="kw">`</span><span class="fu">cat</span> example_greensleeves<span class="kw">`</span><span class="st">&quot;</span> <span class="op">&gt;</span> greensleeves.pbm</span></code></pre></div>
 <p>If you have macOS you can open the image like:</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="ex">open</span> greensleeves.pbm</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="ex">open</span> greensleeves.pbm</span></code></pre></div>
 <p>… otherwise, you’ll have to open it in your viewer of choice how you would
 normally open an image.</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">./deckmyn</span> <span class="st">&quot;</span><span class="kw">`</span><span class="fu">cat</span> deckmyn.c<span class="kw">`</span><span class="st">&quot;</span> <span class="st">&quot;KF m44c4 c4 g4 g4 :  a4 a4 g2 :; &quot;</span> <span class="op">&gt;</span> short_bass.pbm</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">./deckmyn</span> <span class="st">&quot;</span><span class="kw">`</span><span class="fu">cat</span> deckmyn.c<span class="kw">`</span><span class="st">&quot;</span> <span class="st">&quot;KF m44c4 c4 g4 g4 :  a4 a4 g2 :; &quot;</span> <span class="op">&gt;</span> short_bass.pbm</span></code></pre></div>
 <p>If you have macOS you can open the image like:</p>
-<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="ex">open</span> short_bass.pbm</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="ex">open</span> short_bass.pbm</span></code></pre></div>
 <p>… otherwise, you’ll have to open it in your viewer of choice how you would
 normally open an image.</p>
 <h3 id="description">Description</h3>