fix HTML info notes in next/guidelines.html

Adjusted `next/guidelines.md` so that the `next/guidelines.html`
will generate an info notice about avoiding the use of "<br />".

Fixed the formatting of IOCCC judges names.

next/guidelines.html

@@ -908,9 +908,8 @@ to be sure they are seeing the most recent tweets.</p>
 <p><strong><code>|</code></strong> For more information and to see our IOCCC Mastodon posts, see:</p>
 <pre><code>    https://fosstodon.org/@ioccc</code></pre>
 <p><strong>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-</strong></p>
-<p>Leonid A. Broukhis
-chongo (Landon Curt Noll) //<br />
-</p>
+<p>Leonid A. Broukhis<br>
+chongo (Landon Curt Noll) /\cc/\</p>
 
 <!-- END: this line ends content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 <!-- START: this line starts content from: inc/after-content.default.html -->

next/guidelines.md

@@ -1156,5 +1156,5 @@ to be sure they are seeing the most recent tweets.
 
 **-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-**
 
-Leonid A. Broukhis
-chongo (Landon Curt Noll) /\cc/\
+Leonid A. Broukhis<br>
+chongo (Landon Curt Noll) /\\cc/\\