How to hacks pretty URL link rel

Generally, when I shot the source, basic thing when I see my CSS or JS link rel is like below:
‘<link rel=”stylesheet/less” type=”text/css” href=”http://blog.zakariyasoewardi.co.uk/wp-content/themes/wordpress-bootstrap/less/bootstrap.less”>&#8217;

I use third party plugin who claim can make nobody know I use WP, I’m sure my link rel will be like below if I setting with that:
‘<link rel=”stylesheet/less” type=”text/css” href=”http://blog.zakariyasoewardi.co.uk/node/1/wordpress-bootstrap/less/bootstrap.less”>&#8217;

But in specific case, I need hack URL link rel much easier when people or I shot the source, this is what I mean:
‘<link rel=”stylesheet/less” type=”text/css” href=”/wordpress-bootstrap/less/bootstrap.less”>’

Is it possible?