DOC: add info on docstrings in test functions/methods.  Also fix a typo.
DOC: add info on docstrings in test functions/methods.  Also fix a typo.

Reviewed by @charris in combination with PR-358.

ESSS/numpy,jschueller/numpy,tynn/numpy,ahaldane/numpy,musically-ut/numpy,ewmoore/numpy,Eric89GXL/numpy,BMJHayward/numpy,grlee77/numpy,ewmoore/numpy,githubmlai/numpy,Dapid/numpy,rmcgibbo/numpy,dwf/numpy,anntzer/numpy,jakirkham/numpy,pelson/numpy,MaPePeR/numpy,shoyer/numpy,BabeNovelty/numpy,ahaldane/numpy,GaZ3ll3/numpy,Linkid/numpy,MaPePeR/numpy,ogrisel/numpy,simongibbons/numpy,SunghanKim/numpy,pdebuyl/numpy,pbrod/numpy,GaZ3ll3/numpy,sinhrks/numpy,ajdawson/numpy,mattip/numpy,pizzathief/numpy,yiakwy/numpy,hainm/numpy,empeeu/numpy,ChanderG/numpy,gmcastil/numpy,sigma-random/numpy,seberg/numpy,jorisvandenbossche/numpy,GaZ3ll3/numpy,nbeaver/numpy,rgommers/numpy,pyparallel/numpy,jakirkham/numpy,ddasilva/numpy,jschueller/numpy,bmorris3/numpy,ogrisel/numpy,charris/numpy,grlee77/numpy,mhvk/numpy,dato-code/numpy,pelson/numpy,solarjoe/numpy,larsmans/numpy,WillieMaddox/numpy,Yusa95/numpy,groutr/numpy,MSeifert04/numpy,naritta/numpy,WillieMaddox/numpy,tynn/numpy,felipebetancur/numpy,madphysicist/numpy,sigma-random/numpy,shoyer/numpy,charris/numpy,jorisvandenbossche/numpy,kiwifb/numpy,mattip/numpy,mortada/numpy,MSeifert04/numpy,CMartelLML/numpy,rherault-insa/numpy,skymanaditya1/numpy,charris/numpy,jonathanunderwood/numpy,AustereCuriosity/numpy,andsor/numpy,embray/numpy,dwf/numpy,gmcastil/numpy,dwillmer/numpy,CMartelLML/numpy,pbrod/numpy,rgommers/numpy,maniteja123/numpy,jankoslavic/numpy,tdsmith/numpy,pelson/numpy,astrofrog/numpy,naritta/numpy,githubmlai/numpy,ContinuumIO/numpy,ahaldane/numpy,MSeifert04/numpy,cjermain/numpy,ekalosak/numpy,brandon-rhodes/numpy,dch312/numpy,has2k1/numpy,pbrod/numpy,trankmichael/numpy,argriffing/numpy,bmorris3/numpy,rhythmsosad/numpy,WarrenWeckesser/numpy,ewmoore/numpy,Dapid/numpy,groutr/numpy,Yusa95/numpy,ssanderson/numpy,Anwesh43/numpy,b-carter/numpy,nguyentu1602/numpy,ogrisel/numpy,andsor/numpy,ViralLeadership/numpy,gfyoung/numpy,rhythmsosad/numpy,musically-ut/numpy,skwbc/numpy,SiccarPoint/numpy,rgommers/numpy,dimasad/numpy,MichaelAquilina/numpy,pizzathief/numpy,madphysicist/numpy,cowlicks/numpy,naritta/numpy,chiffa/numpy,rajathkumarmp/numpy,utke1/numpy,BMJHayward/numpy,numpy/numpy,immerrr/numpy,dch312/numpy,KaelChen/numpy,ViralLeadership/numpy,Yusa95/numpy,madphysicist/numpy,ahaldane/numpy,mindw/numpy,Eric89GXL/numpy,endolith/numpy,cjermain/numpy,dato-code/numpy,Srisai85/numpy,astrofrog/numpy,grlee77/numpy,anntzer/numpy,mhvk/numpy,dwillmer/numpy,Eric89GXL/numpy,pelson/numpy,ekalosak/numpy,mattip/numpy,jankoslavic/numpy,charris/numpy,hainm/numpy,felipebetancur/numpy,ChristopherHogan/numpy,numpy/numpy,simongibbons/numpy,hainm/numpy,mwiebe/numpy,GrimDerp/numpy,kirillzhuravlev/numpy,GrimDerp/numpy,felipebetancur/numpy,skymanaditya1/numpy,bringingheavendown/numpy,bringingheavendown/numpy,behzadnouri/numpy,rmcgibbo/numpy,chiffa/numpy,madphysicist/numpy,behzadnouri/numpy,trankmichael/numpy,mortada/numpy,ssanderson/numpy,sigma-random/numpy,has2k1/numpy,empeeu/numpy,has2k1/numpy,rajathkumarmp/numpy,ChristopherHogan/numpy,bertrand-l/numpy,ViralLeadership/numpy,SiccarPoint/numpy,jonathanunderwood/numpy,kiwifb/numpy,mathdd/numpy,simongibbons/numpy,b-carter/numpy,jonathanunderwood/numpy,Srisai85/numpy,sonnyhu/numpy,MaPePeR/numpy,numpy/numpy,BabeNovelty/numpy,pyparallel/numpy,MichaelAquilina/numpy,tacaswell/numpy,grlee77/numpy,dch312/numpy,tacaswell/numpy,ogrisel/numpy,rhythmsosad/numpy,rmcgibbo/numpy,bertrand-l/numpy,empeeu/numpy,pyparallel/numpy,mindw/numpy,skwbc/numpy,bmorris3/numpy,cowlicks/numpy,mhvk/numpy,skymanaditya1/numpy,mattip/numpy,rajathkumarmp/numpy,sigma-random/numpy,ChanderG/numpy,anntzer/numpy,drasmuss/numpy,dwf/numpy,groutr/numpy,sinhrks/numpy,SunghanKim/numpy,joferkington/numpy,dch312/numpy,brandon-rhodes/numpy,Srisai85/numpy,Srisai85/numpy,mortada/numpy,ddasilva/numpy,kirillzhuravlev/numpy,brandon-rhodes/numpy,sonnyhu/numpy,mathdd/numpy,rherault-insa/numpy,WarrenWeckesser/numpy,seberg/numpy,dato-code/numpy,ESSS/numpy,CMartelLML/numpy,rudimeier/numpy,Eric89GXL/numpy,pizzathief/numpy,SiccarPoint/numpy,NextThought/pypy-numpy,moreati/numpy,b-carter/numpy,mingwpy/numpy,rudimeier/numpy,Dapid/numpy,mathdd/numpy,leifdenby/numpy,jakirkham/numpy,shoyer/numpy,pbrod/numpy,WarrenWeckesser/numpy,stuarteberg/numpy,dato-code/numpy,pdebuyl/numpy,cjermain/numpy,leifdenby/numpy,rudimeier/numpy,shoyer/numpy,chiffa/numpy,Yusa95/numpy,musically-ut/numpy,ChanderG/numpy,astrofrog/numpy,jschueller/numpy,ChristopherHogan/numpy,bmorris3/numpy,SunghanKim/numpy,dwf/numpy,mwiebe/numpy,ekalosak/numpy,njase/numpy,githubmlai/numpy,simongibbons/numpy,dimasad/numpy,argriffing/numpy,andsor/numpy,madphysicist/numpy,gfyoung/numpy,ajdawson/numpy,njase/numpy,mingwpy/numpy,maniteja123/numpy,mingwpy/numpy,gmcastil/numpy,jakirkham/numpy,stuarteberg/numpy,rherault-insa/numpy,pbrod/numpy,hainm/numpy,Anwesh43/numpy,seberg/numpy,pdebuyl/numpy,Anwesh43/numpy,utke1/numpy,drasmuss/numpy,solarjoe/numpy,nguyentu1602/numpy,githubmlai/numpy,kirillzhuravlev/numpy,numpy/numpy,astrofrog/numpy,chatcannon/numpy,empeeu/numpy,NextThought/pypy-numpy,dimasad/numpy,joferkington/numpy,stuarteberg/numpy,rhythmsosad/numpy,NextThought/pypy-numpy,jorisvandenbossche/numpy,Linkid/numpy,naritta/numpy,mhvk/numpy,behzadnouri/numpy,utke1/numpy,bertrand-l/numpy,mwiebe/numpy,seberg/numpy,AustereCuriosity/numpy,dwf/numpy,MichaelAquilina/numpy,pdebuyl/numpy,larsmans/numpy,MichaelAquilina/numpy,nbeaver/numpy,yiakwy/numpy,endolith/numpy,ogrisel/numpy,solarjoe/numpy,cowlicks/numpy,trankmichael/numpy,jankoslavic/numpy,felipebetancur/numpy,sonnyhu/numpy,tdsmith/numpy,jakirkham/numpy,trankmichael/numpy,mingwpy/numpy,argriffing/numpy,ssanderson/numpy,joferkington/numpy,ahaldane/numpy,dimasad/numpy,embray/numpy,pelson/numpy,yiakwy/numpy,CMartelLML/numpy,chatcannon/numpy,ChristopherHogan/numpy,brandon-rhodes/numpy,embray/numpy,endolith/numpy,embray/numpy,dwillmer/numpy,grlee77/numpy,ewmoore/numpy,dwillmer/numpy,ddasilva/numpy,WarrenWeckesser/numpy,bringingheavendown/numpy,jorisvandenbossche/numpy,ContinuumIO/numpy,BMJHayward/numpy,rajathkumarmp/numpy,KaelChen/numpy,tacaswell/numpy,cowlicks/numpy,musically-ut/numpy,sonnyhu/numpy,jankoslavic/numpy,GaZ3ll3/numpy,KaelChen/numpy,pizzathief/numpy,chatcannon/numpy,nbeaver/numpy,MSeifert04/numpy,endolith/numpy,stuarteberg/numpy,njase/numpy,mindw/numpy,Linkid/numpy,mortada/numpy,anntzer/numpy,astrofrog/numpy,SiccarPoint/numpy,sinhrks/numpy,embray/numpy,BabeNovelty/numpy,skwbc/numpy,KaelChen/numpy,jorisvandenbossche/numpy,simongibbons/numpy,mathdd/numpy,Linkid/numpy,has2k1/numpy,yiakwy/numpy,nguyentu1602/numpy,cjermain/numpy,kiwifb/numpy,mindw/numpy,leifdenby/numpy,abalkin/numpy,ajdawson/numpy,NextThought/pypy-numpy,pizzathief/numpy,BabeNovelty/numpy,immerrr/numpy,shoyer/numpy,WillieMaddox/numpy,rgommers/numpy,SunghanKim/numpy,rudimeier/numpy,moreati/numpy,maniteja123/numpy,ContinuumIO/numpy,abalkin/numpy,GrimDerp/numpy,tdsmith/numpy,nguyentu1602/numpy,AustereCuriosity/numpy,MaPePeR/numpy,GrimDerp/numpy,tynn/numpy,moreati/numpy,larsmans/numpy,larsmans/numpy,immerrr/numpy,ESSS/numpy,immerrr/numpy,andsor/numpy,abalkin/numpy,sinhrks/numpy,kirillzhuravlev/numpy,ajdawson/numpy,BMJHayward/numpy,MSeifert04/numpy,drasmuss/numpy,ewmoore/numpy,Anwesh43/numpy,WarrenWeckesser/numpy,ChanderG/numpy,rmcgibbo/numpy,joferkington/numpy,mhvk/numpy,tdsmith/numpy,ekalosak/numpy,jschueller/numpy,gfyoung/numpy,skymanaditya1/numpy