Fixes in 1998 html files

This includes some notices to those who wish for a greater challenge.

In the 1998/schweikh3 the man page (and its copy to demonstrate the
entry) have been updated slightly but only in comment (move 'or' from
the command suggested to render it in text to its own line before the
next command also in comment).

The bugs file was updated for an entry or two.

1998/dloweneil/index.html

@@ -442,16 +442,18 @@ clockwise <code>l</code> does as well. Instead of using <code>d</code> to drop t
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>Read the authors’ remarks below to find out how to play. We believe that your
 experience may mirror one of our experiences:</p>
-<pre><code>    Originally, I didn&#39;t appreciate the game.  Then I actually read the
-    description of the controls.  I started playing.  I struggled.
-    I spelled my first &quot;poot&quot;.  I was hooked ...</code></pre>
+<blockquote>
+<p>Originally, I didn’t appreciate the game. Then I actually read the
+description of the controls. I started playing. I struggled. I spelled my
+first “poot”. I was hooked …</p>
+</blockquote>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <h3 id="usage">Usage</h3>
 <pre><code>    ./pootris [X size of board] [Y size of board]</code></pre>
 <h3 id="synopsis">Synopsis</h3>
 <p>The object of this game is to spell <code>POOT</code> as much as possible. There
 is no time pressure. You’re given one letter at a time (sort of randomly
-chosen from the set ‘P’, ‘O’, and ‘T’) and you get to move it freely
+chosen from the set ‘<code>P</code>’, ‘<code>O</code>’, and ‘<code>T</code>’) and you get to move it freely
 around the border of the playing board, and decide when and where to drop
 it into the board. Sound easy? Of course, there’s a catch…</p>
 <h3 id="controls">Controls</h3>