MAINT: tools: Add more output to a refguide-check error message.
MAINT: tools: Add more output to a refguide-check error message.

Include the offending line in the error message that is generated
when a docstring contains a nonprintable character.

andyfaff/scipy,scipy/scipy,WarrenWeckesser/scipy,ilayn/scipy,ilayn/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,rgommers/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,rgommers/scipy,andyfaff/scipy,anntzer/scipy,endolith/scipy,mdhaber/scipy,endolith/scipy,scipy/scipy,perimosocordiae/scipy,endolith/scipy,ilayn/scipy,WarrenWeckesser/scipy,WarrenWeckesser/scipy,endolith/scipy,anntzer/scipy,scipy/scipy,anntzer/scipy,perimosocordiae/scipy,ilayn/scipy,anntzer/scipy,perimosocordiae/scipy,anntzer/scipy,mdhaber/scipy,rgommers/scipy,Stefan-Endres/scipy,andyfaff/scipy,andyfaff/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,ilayn/scipy,WarrenWeckesser/scipy,andyfaff/scipy,scipy/scipy,endolith/scipy,ilayn/scipy,scipy/scipy,rgommers/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,anntzer/scipy,mdhaber/scipy,scipy/scipy,andyfaff/scipy,Stefan-Endres/scipy,endolith/scipy,mdhaber/scipy,mdhaber/scipy,rgommers/scipy,mdhaber/scipy,perimosocordiae/scipy