DOC: fix input parameter type in docstring.
DOC: fix input parameter type in docstring.

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