How to use angle brackets in URL on Github Flavored Markdown?

I want to use angle brackets in URL on Github Flavor Markdown.

Markdown:

1. Fork it ( http://github.com/<my-github-username>/oooooaaaa/fork )

Expect:

<li>Fork it ( <a href="http://github.com/">http://github.com/&lt;my-github-username&gt;/oooooaaaa/fork</a> )</li>

Actual:

<li>Fork it ( <a href="http://github.com/">http://github.com/</a><my-github-username>/oooooaaaa/fork )</my-github-username></li>