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.

2014/morgan/README.md

@@ -1,21 +1,21 @@
 ## To build:
 
 ```sh
-make
+    make
 ```
 
 
 ## To use:
 
 ```sh
-./prog [arg ..]
+    ./prog [arg ..]
 ```
 
 
 ## Try:
 
 ```sh
-./try.sh
+    ./try.sh
 ```
 
 
@@ -78,9 +78,9 @@ It will recursively use itself for sub-make (the `MAKE=` assignment inside
 With gcc 4.8.2 on Linux Ubuntu 14.04 64-bit :
 
 ```
-prog.c:22:15: warning: return makes integer from pointer without a cast [enabled by default]
-prog.c:23:72: warning: signed and unsigned type in conditional expression [-Wsign-compare]
-prog.c:12:11: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
+    prog.c:22:15: warning: return makes integer from pointer without a cast [enabled by default]
+    prog.c:23:72: warning: signed and unsigned type in conditional expression [-Wsign-compare]
+    prog.c:12:11: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
 ```
 
 <!--

2014/morgan/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Yves-Marie_Morgan">Yves-Marie Morgan</a><br>
-Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<em>France</em>)
-<br><br></li>
+Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<em>France</em>)</li>
 </ul>
 
 <!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,11 +141,11 @@ Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<e
 <!-- 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> [arg ..]</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> [arg ..]</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>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>Think of this as a Maker Faire’s make. :-)</p>
 <p>It works reasonably well. While not super ultra-featured, it does fair well
@@ -191,9 +190,9 @@ It will recursively use itself for sub-make (the <code>MAKE=</code> assignment i
 </ul>
 <h3 id="compilation-warnings">Compilation warnings</h3>
 <p>With gcc 4.8.2 on Linux Ubuntu 14.04 64-bit :</p>
-<pre><code>prog.c:22:15: warning: return makes integer from pointer without a cast [enabled by default]
-prog.c:23:72: warning: signed and unsigned type in conditional expression [-Wsign-compare]
-prog.c:12:11: warning: suggest parentheses around ‘&amp;&amp;’ within ‘||’ [-Wparentheses]</code></pre>
+<pre><code>    prog.c:22:15: warning: return makes integer from pointer without a cast [enabled by default]
+    prog.c:23:72: warning: signed and unsigned type in conditional expression [-Wsign-compare]
+    prog.c:12:11: warning: suggest parentheses around ‘&amp;&amp;’ within ‘||’ [-Wparentheses]</code></pre>
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