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.

2020/otterness/README.md

@@ -1,7 +1,7 @@
 ## To build:
 
 ```sh
-make
+    make
 ```
 
 
@@ -10,7 +10,7 @@ make
 The current status of this entry is:
 
 ```
-STATUS: INABIAF - please **DO NOT** fix
+    STATUS: INABIAF - please **DO NOT** fix
 ```
 
 For more detailed information see [2020 otterness bugs](../../bugs.html#2020_otterness).
@@ -19,14 +19,14 @@ For more detailed information see [2020 otterness bugs](../../bugs.html#2020_ott
 ## To use:
 
 ```sh
-./prog
+    ./prog
 ```
 
 
 ## Try:
 
 ```sh
-./try.sh
+    ./try.sh
 ```
 
 Now play `output.mid` and `output2.mid` in an audio player that can play MIDI
@@ -75,12 +75,13 @@ Compile the program using the following command (I tested this using both
 `clang` and `gcc`):
 
 ```sh
-cc -pedantic -Wall -Werror -Wextra -O3 -o prog prog.c
+    cc -pedantic -Wall -Werror -Wextra -O3 -o prog prog.c
 ```
 
 The program expects a MIDI on `stdin`, and writes a modified MIDI to `stdout`:
+
 ```
-./prog <input.mid >output.mid
+    ./prog <input.mid >output.mid
 ```
 
 If the program encounters an error, no output will generally be produced, and

2020/otterness/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Nathan_Otterness">Nathan Otterness</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 -->
@@ -142,15 +141,15 @@ 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#2020_otterness">2020 otterness 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">./prog</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">./prog</span></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>
 <p>Now play <code>output.mid</code> and <code>output2.mid</code> in an audio player that can play MIDI
 files.</p>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
@@ -180,9 +179,9 @@ for most of my testing (see <a href="cvikl.mid">cvikl.mid</a>).</p>
 <h3 id="usage">Usage</h3>
 <p>Compile the program using the following command (I tested this using both
 <code>clang</code> and <code>gcc</code>):</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="fu">cc</span> <span class="at">-pedantic</span> <span class="at">-Wall</span> <span class="at">-Werror</span> <span class="at">-Wextra</span> <span class="at">-O3</span> <span class="at">-o</span> prog prog.c</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="fu">cc</span> <span class="at">-pedantic</span> <span class="at">-Wall</span> <span class="at">-Werror</span> <span class="at">-Wextra</span> <span class="at">-O3</span> <span class="at">-o</span> prog prog.c</span></code></pre></div>
 <p>The program expects a MIDI on <code>stdin</code>, and writes a modified MIDI to <code>stdout</code>:</p>
-<pre><code>./prog &lt;input.mid &gt;output.mid</code></pre>
+<pre><code>    ./prog &lt;input.mid &gt;output.mid</code></pre>
 <p>If the program encounters an error, no output will generally be produced, and
 it will exit with a specific status code. Meanings of the various status codes
 are listed below, under the “Program error codes” heading. On success, the