DOC: fix documentation of i and j for tri.
DOC: fix documentation of i and j for tri.

endolith/numpy,MSeifert04/numpy,seberg/numpy,MSeifert04/numpy,abalkin/numpy,WarrenWeckesser/numpy,mattip/numpy,ahaldane/numpy,simongibbons/numpy,pizzathief/numpy,jakirkham/numpy,pizzathief/numpy,madphysicist/numpy,mhvk/numpy,pbrod/numpy,pizzathief/numpy,MSeifert04/numpy,anntzer/numpy,pbrod/numpy,ahaldane/numpy,ahaldane/numpy,jorisvandenbossche/numpy,rgommers/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,seberg/numpy,pbrod/numpy,numpy/numpy,mattip/numpy,simongibbons/numpy,grlee77/numpy,pizzathief/numpy,mhvk/numpy,pizzathief/numpy,endolith/numpy,madphysicist/numpy,mattip/numpy,numpy/numpy,simongibbons/numpy,charris/numpy,MSeifert04/numpy,WarrenWeckesser/numpy,jorisvandenbossche/numpy,charris/numpy,madphysicist/numpy,rgommers/numpy,madphysicist/numpy,charris/numpy,simongibbons/numpy,pdebuyl/numpy,WarrenWeckesser/numpy,madphysicist/numpy,seberg/numpy,grlee77/numpy,pdebuyl/numpy,endolith/numpy,numpy/numpy,anntzer/numpy,mhvk/numpy,jorisvandenbossche/numpy,pbrod/numpy,grlee77/numpy,rgommers/numpy,pdebuyl/numpy,numpy/numpy,anntzer/numpy,jakirkham/numpy,grlee77/numpy,anntzer/numpy,jakirkham/numpy,mattip/numpy,ahaldane/numpy,rgommers/numpy,abalkin/numpy,grlee77/numpy,charris/numpy,ahaldane/numpy,jorisvandenbossche/numpy,pdebuyl/numpy,MSeifert04/numpy,jakirkham/numpy,simongibbons/numpy,endolith/numpy,pbrod/numpy,mhvk/numpy,jakirkham/numpy,seberg/numpy,WarrenWeckesser/numpy,mhvk/numpy,abalkin/numpy