Added comments about where markdown content came from

The HTML files now include a comment indicating from where the main
part of the markdown content.

Changed `bin/gen-other-html.sh` VERSION from "1.0 2024-02-27"
to "1.0.1 2024-03-08".

Changed `bin/gen-top-html.sh` VERSION from "1.2 2024-02-29"
to "1.2.1 2024-03-08".

Changed `bin/gen-year-index.sh` VERSION from "1.0.1 2024-02-23"
to "1.0.2 2024-03-08".

Changed `bin/md2html.sh` VERSION from "1.0.1 2024-02-23"
to "1.1 2024-03-08".

Changed `bin/quick-readme2index.sh` VERSION from "1.1.1 2024-02-23"
to "1.1.2 2024-03-08".

2020/index.html

@@ -11,6 +11,7 @@
 <!-- END: this line ends content from: inc/top.default.html -->
 <!-- -->
 <!-- The original markdown content was formed by the tool: unspecified -->
+<!-- The main part of the markdown content came from: 2020/README.md -->
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@@ -126,22 +127,23 @@ href="https://www.ioccc.org">www.ioccc.org</a>.</p>
 <p>Use <code>make</code> to compile entries. It is possible that on
 non-Unix / non-Linux systems the Makefile needs to be changed. See the
 Makefile for details.</p>
-<p>Read over the Makefile for compile/build issues. Your system may
-require certain changes (add or remove a library, add or remove a
-#define).</p>
+<p>Read over the Makefile and index.html files for compile/build issues.
+Your system may require certain changes (add or remove a library, add or
+remove a <code>#define</code>).</p>
 <p>Some C compilers are not quite as good as they should be. If yours is
 lacking, you may need to compile using clang or gcc instead of your
 local compiler.</p>
 <h2 id="remarks-on-some-of-the-winning-entries">Remarks on some of the
 winning entries</h2>
-<p>This year’s Best of Show (carlini) is such a novel way of obfuscation
-that it would be worth of a special mention in the (future) Best of
-IOCCC list!</p>
+<p>This year’s <a href="carlini/index.html">Best of Show (carlini)</a>
+is such a novel way of obfuscation that it would be worth of a special
+mention in the (future) Best of IOCCC list!</p>
 <p>For some reason, this year’s set of winning entries contains three
-nostalgic games, Asteroids (tsoj), Minesweeper (endoh1), and Snake
-(ferguson1).</p>
-<p>An entry (kurdyukov1) pays homage to a previous entry <a
-href="2015/hou/index.htm0">2015/hou</a>.</p>
+nostalgic games, <a href="tsoj/index.html">Asteroids (tsoj)</a>, <a
+href="endoh1/index.html">Minesweeper (endoh1)</a>, and <a
+href="ferguson1/index.html">Snake (ferguson1)</a>.</p>
+<p>An entry (<a href="kurdyukov1/index.html">kurdyukov1</a>) pays homage
+to previous entry <a href="2015/hou/index.htm0">2015/hou</a>.</p>
 <p>…We’ll stop spouting spoilers now. Have fun exploring all the
 entries!</p>
 <h2 id="remarks-on-some-of-submissions-that-did-not-win">Remarks on some
@@ -153,8 +155,9 @@ them due to reliance on library internals or the system runtime.</p>
 entry could not be brought to compliance within a few seconds of looking
 at the source, it was disqualified.</p>
 <p>One entry tried to get around the size limit by putting the code into
-Makefile variables and using -D. This is already called out as
-discouraged technique in the guidelines, but it is worth a reminder.</p>
+Makefile variables and using <code>-D</code>. This is already called out
+as discouraged technique in the guidelines, but it is worth a
+reminder.</p>
 <p>Several promising entries attempted to make use of the
 <code>syscall</code> function using literal syscall numbers. This is
 utterly non-portable.</p>
@@ -167,6 +170,7 @@ likely to win.</p>
 <p>We hope the authors of non-winning entries will refine their entries
 and perhaps re-submit them for the next IOCCC.</p>
 <h2 id="final-comments">Final Comments</h2>
+<p>One more thing that feels dated is digraphs and trigraphs.</p>
 <p><strong>IMPORTANT NOTE</strong>: See <a
 href="../contact.html">contact.html</a> for up to date contact details
 as well as details on how to provide fixes to any of the entries. See