Fix misspelling of Richard Feynman's last name

Richard Feynman's name was spelled with an extra 'n' at the end. The correct spelling is [Feynman](http://en.wikipedia.org/wiki/Richard_Feynman)

Docker-DCO-1.0-Signed-off-by: Cory Forsyth <cory.forsyth@gmail.com> (github: bantic)