DOC: signal: Add an example to the sweep_poly docstring.
DOC: signal: Add an example to the sweep_poly docstring.

ilayn/scipy,zerothi/scipy,anntzer/scipy,andyfaff/scipy,josephcslater/scipy,josephcslater/scipy,pizzathief/scipy,gfyoung/scipy,grlee77/scipy,person142/scipy,perimosocordiae/scipy,jamestwebber/scipy,josephcslater/scipy,ilayn/scipy,e-q/scipy,jamestwebber/scipy,jamestwebber/scipy,befelix/scipy,perimosocordiae/scipy,nmayorov/scipy,perimosocordiae/scipy,vigna/scipy,aeklant/scipy,Eric89GXL/scipy,zerothi/scipy,jor-/scipy,andyfaff/scipy,lhilt/scipy,rgommers/scipy,zerothi/scipy,apbard/scipy,josephcslater/scipy,tylerjereddy/scipy,gertingold/scipy,anntzer/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,ilayn/scipy,WarrenWeckesser/scipy,pbrod/scipy,endolith/scipy,Eric89GXL/scipy,gertingold/scipy,arokem/scipy,ilayn/scipy,gertingold/scipy,jor-/scipy,jjhelmus/scipy,gertingold/scipy,apbard/scipy,gfyoung/scipy,jamestwebber/scipy,zerothi/scipy,WarrenWeckesser/scipy,rgommers/scipy,jamestwebber/scipy,WarrenWeckesser/scipy,Eric89GXL/scipy,ilayn/scipy,person142/scipy,vigna/scipy,aarchiba/scipy,arokem/scipy,tylerjereddy/scipy,matthew-brett/scipy,aarchiba/scipy,Stefan-Endres/scipy,vigna/scipy,befelix/scipy,apbard/scipy,endolith/scipy,lhilt/scipy,aarchiba/scipy,Stefan-Endres/scipy,jakevdp/scipy,apbard/scipy,perimosocordiae/scipy,pbrod/scipy,scipy/scipy,anntzer/scipy,aeklant/scipy,anntzer/scipy,josephcslater/scipy,anntzer/scipy,gertingold/scipy,befelix/scipy,WarrenWeckesser/scipy,aeklant/scipy,nmayorov/scipy,grlee77/scipy,Stefan-Endres/scipy,lhilt/scipy,andyfaff/scipy,ilayn/scipy,mdhaber/scipy,nmayorov/scipy,jor-/scipy,gfyoung/scipy,mdhaber/scipy,jjhelmus/scipy,vigna/scipy,pizzathief/scipy,grlee77/scipy,perimosocordiae/scipy,tylerjereddy/scipy,matthew-brett/scipy,tylerjereddy/scipy,rgommers/scipy,matthew-brett/scipy,aeklant/scipy,zerothi/scipy,nmayorov/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,apbard/scipy,jakevdp/scipy,person142/scipy,gfyoung/scipy,WarrenWeckesser/scipy,jjhelmus/scipy,jor-/scipy,Eric89GXL/scipy,Eric89GXL/scipy,grlee77/scipy,aarchiba/scipy,lhilt/scipy,scipy/scipy,e-q/scipy,Eric89GXL/scipy,endolith/scipy,nmayorov/scipy,pbrod/scipy,andyfaff/scipy,jjhelmus/scipy,pizzathief/scipy,scipy/scipy,e-q/scipy,matthew-brett/scipy,andyfaff/scipy,mdhaber/scipy,e-q/scipy,jakevdp/scipy,gfyoung/scipy,lhilt/scipy,matthew-brett/scipy,endolith/scipy,scipy/scipy,pbrod/scipy,person142/scipy,pbrod/scipy,jjhelmus/scipy,rgommers/scipy,pizzathief/scipy,jakevdp/scipy,arokem/scipy,jor-/scipy,zerothi/scipy,endolith/scipy,mdhaber/scipy,person142/scipy,Stefan-Endres/scipy,befelix/scipy,arokem/scipy,aeklant/scipy,Stefan-Endres/scipy,arokem/scipy,vigna/scipy,pbrod/scipy,anntzer/scipy,endolith/scipy,e-q/scipy,mdhaber/scipy,andyfaff/scipy,scipy/scipy,pizzathief/scipy,scipy/scipy,befelix/scipy,jakevdp/scipy,rgommers/scipy,mdhaber/scipy,grlee77/scipy,aarchiba/scipy