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.

2019/giles/README.md

@@ -1,21 +1,21 @@
 ## To build:
 
 ```sh
-make
+    make
 ```
 
 
 ## To use:
 
 ```sh
-./prog infile.wav outfile.wav
+    ./prog infile.wav outfile.wav
 ```
 
 
 ## Try:
 
 ```sh
-./try.sh
+    ./try.sh
 ```
 
 
@@ -63,8 +63,8 @@ Interesting fact: The size of the program from `./iocccsize -i` is 2019.
 #### How to use:
 
 ```sh
-./prog input [output [size [dry [wet [damping]]]]]
-prog.exe input [output [size [dry [wet [damping]]]]]
+    ./prog input [output [size [dry [wet [damping]]]]]
+    prog.exe input [output [size [dry [wet [damping]]]]]
 ```
 
 * `input`: The path to the input file. Required.
@@ -88,7 +88,7 @@ so it may be a good idea to adjust the ratio of "dry" to "wet", to give a more
 pleasant result:
 
 ```sh
-./prog in.wav out.wav 1.8 80% 15%
+    ./prog in.wav out.wav 1.8 80% 15%
 ```
 
 The program only supports WAV files, and only mostly. Other audio formats, such

2019/giles/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Edward_Giles">Edward Giles</a><br>
-Location: <a href="../../location.html#AU">AU</a> - <em>Commonwealth of Australia</em> (<em>Australia</em>)
-<br><br></li>
+Location: <a href="../../location.html#AU">AU</a> - <em>Commonwealth of Australia</em> (<em>Australia</em>)</li>
 </ul>
 
 <!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,11 +141,11 @@ Location: <a href="../../location.html#AU">AU</a> - <em>Commonwealth of Australi
 <!-- 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>
 <h2 id="to-use">To use:</h2>
-<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="ex">./prog</span> infile.wav outfile.wav</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="ex">./prog</span> infile.wav outfile.wav</span></code></pre></div>
 <h2 id="try">Try:</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">./try.sh</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">./try.sh</span></span></code></pre></div>
 <p>NOTE: <code>play</code>, which <a href="try.sh">try.sh</a> uses, comes from SoX, the Swiss Army Knife
 of sound processing programs. If you don’t have this installed, see <a href="../../faq.html#sox">FAQ 3.10:
 How do I compile and use an IOCCC entry that requires sound</a>.</p>
@@ -176,8 +175,8 @@ the latter reports warnings about loss of information when converting <code>floa
 and that <code>void (*)()</code> and <code>void (*)(void)</code> are not the same thing.</p>
 <p>Interesting fact: The size of the program from <code>./iocccsize -i</code> is 2019.</p>
 <h4 id="how-to-use">How to use:</h4>
-<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">./prog</span> input [output [size [dry [wet <span class="pp">[</span><span class="ss">damping</span><span class="pp">]</span>]]]]</span>
-<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="ex">prog.exe</span> input [output [size [dry [wet <span class="pp">[</span><span class="ss">damping</span><span class="pp">]</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">./prog</span> input [output [size [dry [wet <span class="pp">[</span><span class="ss">damping</span><span class="pp">]</span>]]]]</span>
+<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a>    <span class="ex">prog.exe</span> input [output [size [dry [wet <span class="pp">[</span><span class="ss">damping</span><span class="pp">]</span>]]]]</span></code></pre></div>
 <ul>
 <li><code>input</code>: The path to the input file. Required.</li>
 <li><code>output</code>: The path to the output file. Optional, defaults to <code>out.wav</code>.</li>
@@ -197,7 +196,7 @@ decimal numbers (e.g. 0.35) or as percentages (e.g. 35%).</p>
 <p>The default settings are designed to make the effect obvious rather than subtle,
 so it may be a good idea to adjust the ratio of “dry” to “wet”, to give a more
 pleasant result:</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">./prog</span> in.wav out.wav 1.8 80% 15%</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">./prog</span> in.wav out.wav 1.8 80% 15%</span></code></pre></div>
 <p>The program only supports WAV files, and only mostly. Other audio formats, such
 as MP3, are not supported because they are difficult to decode, but there are
 free programs such as <code>ffmpeg</code> that can perform the conversion. Some of the