DOC: stats: note special cases of levy_stable (#8289)
DOC: stats: note special cases of levy_stable (#8289)

* DOC: stats: note special cases of levy_stable

Co-authored-by: Joseph Albert <5e200bb7c8bdc3a41327adae5eb356affdf1cf8e@psu.edu>
Co-authored-by: Matt Haberland <1f6e3f9dd4f3b851e1c9f994a33220fb712394f1@calpoly.edu>
ilayn/scipy,scipy/scipy,anntzer/scipy,perimosocordiae/scipy,ilayn/scipy,anntzer/scipy,scipy/scipy,anntzer/scipy,Stefan-Endres/scipy,rgommers/scipy,endolith/scipy,mdhaber/scipy,WarrenWeckesser/scipy,vigna/scipy,ilayn/scipy,mdhaber/scipy,perimosocordiae/scipy,anntzer/scipy,scipy/scipy,perimosocordiae/scipy,rgommers/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,andyfaff/scipy,anntzer/scipy,anntzer/scipy,WarrenWeckesser/scipy,endolith/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,andyfaff/scipy,rgommers/scipy,endolith/scipy,scipy/scipy,rgommers/scipy,ilayn/scipy,mdhaber/scipy,perimosocordiae/scipy,vigna/scipy,scipy/scipy,andyfaff/scipy,mdhaber/scipy,endolith/scipy,ilayn/scipy,vigna/scipy,endolith/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,vigna/scipy,ilayn/scipy,Stefan-Endres/scipy,andyfaff/scipy,andyfaff/scipy,WarrenWeckesser/scipy,endolith/scipy,mdhaber/scipy,rgommers/scipy,scipy/scipy,WarrenWeckesser/scipy,andyfaff/scipy,Stefan-Endres/scipy,mdhaber/scipy,vigna/scipy