Fix doc example errors
Fix doc example errors

RMKD/networkx,bzero/networkx,andnovar/networkx,SanketDG/networkx,nathania/networkx,ghdk/networkx,kernc/networkx,ghdk/networkx,sharifulgeo/networkx,jfinkels/networkx,kernc/networkx,dhimmel/networkx,jakevdp/networkx,RMKD/networkx,yashu-seth/networkx,bzero/networkx,RMKD/networkx,dmoliveira/networkx,blublud/networkx,aureooms/networkx,farhaanbukhsh/networkx,debsankha/networkx,nathania/networkx,blublud/networkx,wasade/networkx,JamesClough/networkx,dmoliveira/networkx,ionanrozenfeld/networkx,nathania/networkx,Sixshaman/networkx,chrisnatali/networkx,sharifulgeo/networkx,harlowja/networkx,goulu/networkx,farhaanbukhsh/networkx,farhaanbukhsh/networkx,sharifulgeo/networkx,chrisnatali/networkx,ionanrozenfeld/networkx,OrkoHunter/networkx,dhimmel/networkx,ionanrozenfeld/networkx,kernc/networkx,jcurbelo/networkx,debsankha/networkx,ghdk/networkx,harlowja/networkx,NvanAdrichem/networkx,tmilicic/networkx,dmoliveira/networkx,jakevdp/networkx,blublud/networkx,cmtm/networkx,bzero/networkx,chrisnatali/networkx,jakevdp/networkx,harlowja/networkx,debsankha/networkx,beni55/networkx,ltiao/networkx,dhimmel/networkx,michaelpacer/networkx,aureooms/networkx,aureooms/networkx