Fix missing cases of 'web site' to 'website'

... including the index.{md,html} which was in all caps ..

The bin/README.md file (and index.html) was updated slightly with an
added comma: not strictly necessary but for some it might be easier to
read. This was discovered as I was going through the links (not done
checking them yet but so far so good).

next/rules.html

@@ -631,7 +631,7 @@ the <a href="https://fosstodon.org/@ioccc">IOCCC on Mastodon</a> account. See ou
 <a href="../faq.html#try_mastodon">FAQ</a> for more information. Please do note that unless
 you are mentioned by us you will <strong>NOT</strong> get a notification from the app so you
 should refresh the page even if you do follow us.</p>
-<p><strong><code>|</code></strong> Check out the <a href="https://www.ioccc.org/index.html">Official IOCCC winner web site</a> in general.</p>
+<p><strong><code>|</code></strong> Check out the <a href="https://www.ioccc.org/index.html">Official IOCCC winner website</a> in general.</p>
 <p>Leonid A. Broukhis<br>
 chongo (Landon Curt Noll) <code>/\cc/\</code></p>
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