ENH: fixed typos in requirements
ENH: fixed typos in requirements

bmockler/MOSFiT,bmockler/MOSFiT,guillochon/FriendlyFit,villrv/MOSFiT,mnicholl/MOSFiT,mnicholl/MOSFiT,guillochon/MOSFiT,mnicholl/MOSFiT,guillochon/MOSFiT,guillochon/MOSFiT,villrv/MOSFiT