Make ^NOTE in markdown/html files bold

1989/fubar/index.html

@@ -429,7 +429,7 @@ loop and compilation error as described in the <a href="../../bugs.html#1989_fub
 bugs.html</a> file). This is, however, a feature, not a bug.</p>
 <p>The blank line at the beginning of the source is mandatory.
 Do you know why?</p>
-<p>NOTE: the file <code>ouroboros.c</code> is created by the program itself so this is why it
+<p><strong>NOTE</strong>: the file <code>ouroboros.c</code> is created by the program itself so this is why it
 is not in the repository.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>In a nutshell, this is probably the slowest and most