Docs: Resolve tcksift2 numerical precision discrepancy
Docs: Resolve tcksift2 numerical precision discrepancy

Divergence introduced in 3d1eb23b due to commit being made from a Windows machine.

MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3