8047743: update com/sun/javadoc/testHref for unrecognized <action>
Reviewed-by: jjg, ksrini
<p>These should all be escaped:</p>
<p>\</p>
<p>`</p>
<p>*</p>
<p>_</p>
<p>{</p>
<p>}</p>
<p>[</p>
<p>]</p>
<p>(</p>
<p>)</p>
<p>#</p>
<p>+</p>
<p>-</p>
<p>.</p>
<p>!</p>