Various fixes and updates

The links to rules should all be good. This includes in news.html,
quick-start.html, next/submit.html, 2024/index.html (it had been
modified to refer to next/rules.html instead of 2024/rules.html) as well
as the guidelines and rules themselves (under next/).

Various typo fixes. I'm afraid there are likely others but I must let
others deal with that as I am out of time.

Removed FAQ about mastodon push notifications. When I added the FAQ
about push notifications for mastodon I was incorrect. The web browser
interface suggests it but I never got a push notification even before
Apple broke them. There seems to be no way at this time to get them. I
note that there was a screenshot in the FAQ but this file still is in
the repo possibly.

I regenerated the html files but it's possible I forgot to do one at the
last minute.

next/submit.html

@@ -452,7 +452,7 @@
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <!-- BEFORE: 1st line of markdown file: next/submit.md -->
-<p>Use mkiocccentry to rebuild# How to upload your submission to the IOCCC</p>
+<h1 id="how-to-upload-your-submission-to-the-ioccc">How to upload your submission to the IOCCC</h1>
 <p><strong>IMPORTANT NOTE</strong>: The <a href="https://submit.ioccc.org">IOCCC submit server</a>
 is only ready for submissions
 <strong>ONLY WHEN THE CONTEST IS <a href="../faq.html#open">open</a></strong>.</p>
@@ -518,7 +518,7 @@ the file selection step.</p>
 <li>the status of the submission</li>
 <li>the filename, which will be in the correct format, assuming you used
 <code>mkiocccentry(1)</code> which is <strong>HIGHLY</strong> recommended so that you do not break
-<a href="rules.html#rule-17---packaging">Rule 17 - Packaging</a>!</li>
+<a href="rules.html#rule17-mkiocccentry">Rule 17 - Use mkiocccentry</a>!</li>
 <li>the file length, which <code>txzchk(1)</code> will also verify (the file itself and the
 tarball listing).</li>
 <li>the upload date.</li>
@@ -576,7 +576,7 @@ To see any status updates, you should logout and log back in later.</p>
 <p>… or <strong>ANY</strong> other error then you <strong>MUST FIX</strong> your submission, repackage your
 tarball with <code>mkiocccentry</code> and upload to the same slot again! If you do not fix
 this your submission <strong>WILL BE REJECTED</strong> for violating
-<a href="rules.html#rule-17---packaging">Rule 17 - Packaging</a>!</p>
+<a href="rules.html#rule17-mkiocccentry">Rule 17 - Use mkiocccentry</a>!</p>
 <p>If the format test went well, then you will see:</p>
 <blockquote>
 <p><strong>Status: submit file received by the IOCCC judges. Passed both txzchk and chksubmit tests.</strong></p>
@@ -586,7 +586,7 @@ rules or that everything is OK once the tarball is extracted; it simply means
 the tests performed by the tools passed. If you find a flaw in a tool and
 abuse it and the tests pass then you stand a significant chance of having your
 submission rejected for violating
-<a href="rules.html#rule-17---packaging">Rule 17 - Packaging</a>,
+<a href="rules.html#rule17-mkiocccentry">Rule 17 - Use mkiocccentry</a>,
 even if the tests passed.</p>
 <p>For details on <code>txzchk</code>, see the
 FAQ on “<a href="../faq.html#txzchk">txzchk</a>”.</p>