DOC: Use std docstring for multivariate normal (#13203)
DOC: Use std docstring for multivariate normal (#13203)

Switch from python-style kwarg signature to style used for all other functions
anntzer/numpy,ahaldane/numpy,grlee77/numpy,endolith/numpy,mhvk/numpy,grlee77/numpy,seberg/numpy,MSeifert04/numpy,pdebuyl/numpy,endolith/numpy,pizzathief/numpy,ahaldane/numpy,madphysicist/numpy,shoyer/numpy,mhvk/numpy,anntzer/numpy,jakirkham/numpy,pbrod/numpy,shoyer/numpy,shoyer/numpy,numpy/numpy,pbrod/numpy,pdebuyl/numpy,MSeifert04/numpy,simongibbons/numpy,madphysicist/numpy,endolith/numpy,madphysicist/numpy,pizzathief/numpy,ahaldane/numpy,abalkin/numpy,shoyer/numpy,charris/numpy,grlee77/numpy,pizzathief/numpy,simongibbons/numpy,shoyer/numpy,grlee77/numpy,numpy/numpy,mhvk/numpy,rgommers/numpy,simongibbons/numpy,numpy/numpy,mhvk/numpy,anntzer/numpy,endolith/numpy,WarrenWeckesser/numpy,MSeifert04/numpy,numpy/numpy,mattip/numpy,pizzathief/numpy,jorisvandenbossche/numpy,pdebuyl/numpy,charris/numpy,simongibbons/numpy,grlee77/numpy,WarrenWeckesser/numpy,pizzathief/numpy,mattip/numpy,mattip/numpy,ahaldane/numpy,rgommers/numpy,jakirkham/numpy,seberg/numpy,pbrod/numpy,mhvk/numpy,pbrod/numpy,charris/numpy,jorisvandenbossche/numpy,MSeifert04/numpy,pbrod/numpy,jakirkham/numpy,jakirkham/numpy,ahaldane/numpy,jakirkham/numpy,jorisvandenbossche/numpy,madphysicist/numpy,jorisvandenbossche/numpy,madphysicist/numpy,WarrenWeckesser/numpy,WarrenWeckesser/numpy,rgommers/numpy,simongibbons/numpy,seberg/numpy,rgommers/numpy,abalkin/numpy,pdebuyl/numpy,anntzer/numpy,mattip/numpy,WarrenWeckesser/numpy,MSeifert04/numpy,seberg/numpy,abalkin/numpy,charris/numpy,jorisvandenbossche/numpy