Add wording suggested by Eric. Remove extra example.
Add wording suggested by Eric. Remove extra example.

(The existing example already showcases the contracted axis stacking.)

WarrenWeckesser/numpy,jorisvandenbossche/numpy,mhvk/numpy,pdebuyl/numpy,WarrenWeckesser/numpy,seberg/numpy,rgommers/numpy,grlee77/numpy,jorisvandenbossche/numpy,rgommers/numpy,mhvk/numpy,pbrod/numpy,mhvk/numpy,jakirkham/numpy,anntzer/numpy,endolith/numpy,simongibbons/numpy,simongibbons/numpy,madphysicist/numpy,pbrod/numpy,endolith/numpy,grlee77/numpy,grlee77/numpy,mhvk/numpy,abalkin/numpy,WarrenWeckesser/numpy,jorisvandenbossche/numpy,abalkin/numpy,rgommers/numpy,pbrod/numpy,numpy/numpy,charris/numpy,numpy/numpy,charris/numpy,seberg/numpy,simongibbons/numpy,pdebuyl/numpy,seberg/numpy,mhvk/numpy,grlee77/numpy,anntzer/numpy,mattip/numpy,jakirkham/numpy,jakirkham/numpy,jakirkham/numpy,madphysicist/numpy,rgommers/numpy,WarrenWeckesser/numpy,mattip/numpy,pbrod/numpy,WarrenWeckesser/numpy,charris/numpy,simongibbons/numpy,endolith/numpy,mattip/numpy,pbrod/numpy,madphysicist/numpy,jorisvandenbossche/numpy,numpy/numpy,anntzer/numpy,grlee77/numpy,seberg/numpy,charris/numpy,endolith/numpy,anntzer/numpy,madphysicist/numpy,jorisvandenbossche/numpy,jakirkham/numpy,simongibbons/numpy,abalkin/numpy,madphysicist/numpy,numpy/numpy,pdebuyl/numpy,pdebuyl/numpy,mattip/numpy