DOC: Fix description of PCG64 jump.
DOC: Fix description of PCG64 jump.

Also, make the jump step odd to make it a proper Weyl generator. No, this will
never, ever, ever, ever matter. But it feels nicer.

grlee77/numpy,MSeifert04/numpy,simongibbons/numpy,mattip/numpy,numpy/numpy,charris/numpy,mhvk/numpy,madphysicist/numpy,WarrenWeckesser/numpy,mattip/numpy,anntzer/numpy,rgommers/numpy,mhvk/numpy,jakirkham/numpy,jakirkham/numpy,abalkin/numpy,jorisvandenbossche/numpy,ahaldane/numpy,mhvk/numpy,jakirkham/numpy,pdebuyl/numpy,madphysicist/numpy,madphysicist/numpy,WarrenWeckesser/numpy,mhvk/numpy,jakirkham/numpy,MSeifert04/numpy,seberg/numpy,madphysicist/numpy,jorisvandenbossche/numpy,pdebuyl/numpy,pizzathief/numpy,WarrenWeckesser/numpy,MSeifert04/numpy,pizzathief/numpy,seberg/numpy,simongibbons/numpy,seberg/numpy,jorisvandenbossche/numpy,abalkin/numpy,anntzer/numpy,mhvk/numpy,ahaldane/numpy,numpy/numpy,charris/numpy,pdebuyl/numpy,mattip/numpy,grlee77/numpy,pbrod/numpy,simongibbons/numpy,mattip/numpy,endolith/numpy,madphysicist/numpy,pdebuyl/numpy,seberg/numpy,pizzathief/numpy,grlee77/numpy,grlee77/numpy,WarrenWeckesser/numpy,MSeifert04/numpy,pbrod/numpy,WarrenWeckesser/numpy,endolith/numpy,jakirkham/numpy,charris/numpy,rgommers/numpy,abalkin/numpy,pbrod/numpy,simongibbons/numpy,grlee77/numpy,pizzathief/numpy,anntzer/numpy,numpy/numpy,rgommers/numpy,ahaldane/numpy,numpy/numpy,MSeifert04/numpy,simongibbons/numpy,endolith/numpy,jorisvandenbossche/numpy,ahaldane/numpy,ahaldane/numpy,pbrod/numpy,rgommers/numpy,endolith/numpy,charris/numpy,jorisvandenbossche/numpy,pizzathief/numpy,anntzer/numpy,pbrod/numpy