I was looking at this and wondered how they did it for the bbcode examples. What I discovered was it isn't located in the FAQ. What they've done is call from misc.php.
Code:
'bbcode' => array(
'help_bbcodes',
'help_bbcodes_bbcode',
'help_bbcodes_link',
'bbcode_code',
'bbcode_html',
'bbcode_php',
'bbcode_quote',
),
I think you'll have to do something similar in order to display raw html within the FAQ.