DOC: mitigate newton optimization not converging.
DOC: mitigate newton optimization not converging.

[skip azp] [skip actions]

anntzer/scipy,perimosocordiae/scipy,ilayn/scipy,matthew-brett/scipy,endolith/scipy,rgommers/scipy,anntzer/scipy,Stefan-Endres/scipy,mdhaber/scipy,andyfaff/scipy,matthew-brett/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,zerothi/scipy,tylerjereddy/scipy,andyfaff/scipy,scipy/scipy,andyfaff/scipy,tylerjereddy/scipy,vigna/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,mdhaber/scipy,mdhaber/scipy,vigna/scipy,endolith/scipy,andyfaff/scipy,rgommers/scipy,endolith/scipy,anntzer/scipy,WarrenWeckesser/scipy,anntzer/scipy,WarrenWeckesser/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,vigna/scipy,mdhaber/scipy,anntzer/scipy,zerothi/scipy,perimosocordiae/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,matthew-brett/scipy,vigna/scipy,matthew-brett/scipy,mdhaber/scipy,ilayn/scipy,ilayn/scipy,WarrenWeckesser/scipy,rgommers/scipy,zerothi/scipy,perimosocordiae/scipy,scipy/scipy,andyfaff/scipy,mdhaber/scipy,WarrenWeckesser/scipy,scipy/scipy,zerothi/scipy,endolith/scipy,zerothi/scipy,endolith/scipy,Stefan-Endres/scipy,rgommers/scipy,rgommers/scipy,Stefan-Endres/scipy,Stefan-Endres/scipy,scipy/scipy,ilayn/scipy,matthew-brett/scipy,scipy/scipy,scipy/scipy,andyfaff/scipy,ilayn/scipy,tylerjereddy/scipy,ilayn/scipy,perimosocordiae/scipy,vigna/scipy,zerothi/scipy,endolith/scipy,anntzer/scipy