MAINT: PR 11705 adjustments
MAINT: PR 11705 adjustments

* the `SphericalVoronoi()` docstring refguide failures
were fixed

* the Slerp loop in the adjusted docstring has
improved concision, based on reviewer feedback

* improve PEP8 compliance of `SphericalVoronoi()`
docstring based on reviewer feedback

tylerjereddy/scipy,nmayorov/scipy,anntzer/scipy,Eric89GXL/scipy,pizzathief/scipy,andyfaff/scipy,andyfaff/scipy,vigna/scipy,anntzer/scipy,grlee77/scipy,rgommers/scipy,WarrenWeckesser/scipy,ilayn/scipy,person142/scipy,e-q/scipy,nmayorov/scipy,WarrenWeckesser/scipy,WarrenWeckesser/scipy,e-q/scipy,rgommers/scipy,person142/scipy,endolith/scipy,Eric89GXL/scipy,matthew-brett/scipy,endolith/scipy,perimosocordiae/scipy,Eric89GXL/scipy,ilayn/scipy,grlee77/scipy,andyfaff/scipy,mdhaber/scipy,perimosocordiae/scipy,vigna/scipy,perimosocordiae/scipy,person142/scipy,Stefan-Endres/scipy,mdhaber/scipy,matthew-brett/scipy,mdhaber/scipy,nmayorov/scipy,tylerjereddy/scipy,tylerjereddy/scipy,matthew-brett/scipy,WarrenWeckesser/scipy,mdhaber/scipy,person142/scipy,nmayorov/scipy,Stefan-Endres/scipy,zerothi/scipy,perimosocordiae/scipy,zerothi/scipy,scipy/scipy,endolith/scipy,scipy/scipy,anntzer/scipy,e-q/scipy,scipy/scipy,perimosocordiae/scipy,mdhaber/scipy,Eric89GXL/scipy,e-q/scipy,andyfaff/scipy,mdhaber/scipy,WarrenWeckesser/scipy,ilayn/scipy,grlee77/scipy,zerothi/scipy,rgommers/scipy,ilayn/scipy,anntzer/scipy,rgommers/scipy,Stefan-Endres/scipy,zerothi/scipy,Stefan-Endres/scipy,anntzer/scipy,e-q/scipy,endolith/scipy,Eric89GXL/scipy,anntzer/scipy,scipy/scipy,grlee77/scipy,endolith/scipy,andyfaff/scipy,nmayorov/scipy,endolith/scipy,tylerjereddy/scipy,zerothi/scipy,grlee77/scipy,pizzathief/scipy,vigna/scipy,scipy/scipy,Eric89GXL/scipy,rgommers/scipy,pizzathief/scipy,Stefan-Endres/scipy,ilayn/scipy,pizzathief/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,vigna/scipy,Stefan-Endres/scipy,matthew-brett/scipy,andyfaff/scipy,matthew-brett/scipy,vigna/scipy,person142/scipy,ilayn/scipy,pizzathief/scipy,zerothi/scipy,tylerjereddy/scipy,scipy/scipy