DOC: Typo.
DOC: Typo.

StongeEtienne/dipy,matthieudumont/dipy,FrancoisRheaultUS/dipy,villalonreina/dipy,FrancoisRheaultUS/dipy,matthieudumont/dipy,villalonreina/dipy,nilgoyyou/dipy,nilgoyyou/dipy,StongeEtienne/dipy,JohnGriffiths/dipy,JohnGriffiths/dipy