DOC: Fix the signatures of 3 functions
DOC: Fix the signatures of 3 functions

seberg/numpy,anntzer/numpy,anntzer/numpy,jakirkham/numpy,mhvk/numpy,endolith/numpy,numpy/numpy,mattip/numpy,mhvk/numpy,numpy/numpy,charris/numpy,mattip/numpy,rgommers/numpy,numpy/numpy,seberg/numpy,jakirkham/numpy,endolith/numpy,endolith/numpy,rgommers/numpy,mattip/numpy,jakirkham/numpy,pdebuyl/numpy,simongibbons/numpy,mhvk/numpy,simongibbons/numpy,charris/numpy,mhvk/numpy,pdebuyl/numpy,mattip/numpy,anntzer/numpy,anntzer/numpy,seberg/numpy,simongibbons/numpy,charris/numpy,numpy/numpy,charris/numpy,simongibbons/numpy,rgommers/numpy,seberg/numpy,mhvk/numpy,pdebuyl/numpy,pdebuyl/numpy,simongibbons/numpy,jakirkham/numpy,endolith/numpy,jakirkham/numpy,rgommers/numpy