MAINT: fix latex for dep free params
MAINT: fix latex for dep free params

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