How do you unprotect articles? 

On the article Michelle Thomas there is a debate whether she died at 29 or 30; with independent reliable sources stating both. And because of this, we can't list her birth as September 23, 1968 because of the controversy. But, I have found a reliable source which states she was born September 23, 1968. Here's the link: http://www.kellie-williams.com/michellethomas.htm#Family%20Matters I want to unprotect the article so I can add this and provide the source. How do I do that.