It is indeed the site that you found. The article was entitled "Frances Cress Welsing: Melanin Theory". Frances Cress Welsing was a homophobic black supremacist writer. She claimed that the melanin in the skin of black Americans is able to talk to plants and can pick up signals from outer space and sense the existence of extrasolar planets. The website also had a part 2 and part 3 which credited Welsing with "changing our conversations on racism".
The Telegraph article notes that this website is privately run, "controlled by a white man," and that "one of the founders of the Black History Month celebration" complained about the website. It's not clear what this privately run website has to do with the UK's Black History Month. Anyone can create a website about anything.