Major FAQ updates

A number of question answers have been merged and shortened somewhat.

Fix link in the menu of all html pages and the inc/ files that was
broken due to renaming an anchor.

The guidelines and rules have had a link fix (to the FAQ) as well as
some additional points added about the mkiocccentry toolkit.

More work in the FAQ needs to be done, including with the how to enter
the IOCCC, but as so much work has been done already I have decided to
make the commit to get these many important changes out of the way.

next/guidelines.html

@@ -137,7 +137,7 @@
             </div>
 
             <div class="outfit-font">
-              <a href="../faq.html#fix_web_site" class="sub-item-link">
+              <a href="../faq.html#fix_website" class="sub-item-link">
                 Fixing the website
               </a>
             </div>
@@ -288,7 +288,7 @@
               Fixing IOCCC entries
             </a>
 
-            <a class="mobile-submenu-item" href="../faq.html#fix_web_site">
+            <a class="mobile-submenu-item" href="../faq.html#fix_website">
               Fixing the website
             </a>
 
@@ -401,7 +401,7 @@ as well as our
 FAQ on “<a href="../faq.html#question">asking questions</a>”
 about these guidelines. You might also find the
 FAQ in general useful, especially the
-<a href="../faq.html#enter">FAQ section “How to enter: the bare minimum you need to know”</a>.</p>
+<a href="../faq.html#submit">FAQ section “How to enter: the bare minimum you need to know”</a>.</p>
 <h1 id="the-ioccc-is-closed">The IOCCC is closed</h1>
 <p>The IOCCC is <strong>NOT</strong> accepting new submissions at this time. See the
 <a href="../years.html">IOCCC winning entries page</a> for the entries that have won the
@@ -426,7 +426,7 @@ writing by <a href="../contact.html">contacting the judges</a>.</p>
 <h2 id="ioccc-guidelines-version">IOCCC Guidelines version</h2>
 </div>
 <p class="leftbar">
-These <a href="guidelines.html">IOCCC guidelines</a> are version <strong>28.17 2024-10-20</strong>.
+These <a href="guidelines.html">IOCCC guidelines</a> are version <strong>28.18 2024-10-21</strong>.
 </p>
 <p><strong>IMPORTANT</strong>: Be <strong>SURE</strong> to read the <a href="rules.html">IOCCC rules</a>.</p>
 <div id="change_marks">
@@ -663,6 +663,10 @@ See the <a href="https://github.com/ioccc-src/mkiocccentry">mkiocccentry repo</a
 for the <code>mkiocccentry(1)</code> tool and below for more details.
 </p>
 <p class="leftbar">
+<p><strong>IMPORTANT NOTE</strong>: make <strong>CERTAIN</strong> you have the most recent version of the
+<code>mkiocccentry</code> toolkit! See the
+FAQ on “<a href="../faq.html#mkiocccentry">obtaining the mkiocccentry toolkit</a>”.</p>
+<p class="leftbar">
 <code>mkiocccentry</code> runs a number of checks, by the tool itself and by executing other
 tools, <em>before</em> packaging your xz compressed tarball. Once the tarball is
 packaged it will run <code>txzchk(1)</code>, which runs <code>fnamchk(1)</code> as part of its