A little more docstring cleanup for `duplication_divergence_graph`.
A little more docstring cleanup for `duplication_divergence_graph`.

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