Make ^NOTE in markdown/html files bold

1989/jar.2/index.html

@@ -423,7 +423,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
     [enter some lisp]
 
     ./jar.2 &lt; some_lisp_file</code></pre>
-<p>NOTE: this entry will likely segfault on invalid input.</p>
+<p><strong>NOTE</strong>: this entry will likely segfault on invalid input.</p>
 <h2 id="try">Try:</h2>
 <pre><code>    ./try.sh