Has the writer for the Yahoo! front page just discovered the Hyphen key on a keyboard, and decided to use it — once too often?
The hyphen after Jenner is correct. (Good job!) But there shouldn’t be a hyphen in the name because there’s no chance of a misunderstanding. Unless you’re writing about Olivia Newton-John or Julia Louis-Dreyfus. Then they get one hyphen each. But just one.