Tidy up the IPAM driver doc
Tidy up the IPAM driver doc

Signed-off-by: Alex Chan <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@alexwlchan.net>
thaJeztah/docker,Ramzec/docker,jameszhan/docker,bearstech/moby,nalind/docker,konstruktoid/docker-upstream,yosifkit/docker,mahak/docker,flavio/docker,docker/docker,bearstech/moby,nalind/docker,konstruktoid/docker-upstream,flavio/docker,jimjag/docker,djs55/docker,trebonian/docker,paralin/docker,Mokolea/docker,AkihiroSuda/docker,moby/moby,paralin/docker,nawawi/docker,docker/docker,moby/moby,konstruktoid/docker-upstream,yosifkit/docker,nawawi/docker,Ramzec/docker,moul/docker,moby/moby,mahak/docker,yosifkit/docker,vdemeester/docker,nalind/docker,thaJeztah/docker,flavio/docker,jimjag/docker,cpuguy83/docker,Ramzec/docker,gnailuy/docker,AkihiroSuda/docker,moul/docker,nawawi/docker,Ramzec/docker,djs55/docker,vdemeester/docker,jimjag/docker,jameszhan/docker,mahak/docker,thaJeztah/docker,moul/docker,Mokolea/docker,mahak/docker,trebonian/docker,gnailuy/docker,jthelin/docker,vdemeester/docker,Mokolea/docker,gnailuy/docker,gnailuy/docker,paralin/docker,cpuguy83/docker,jthelin/docker,cpuguy83/docker,jameszhan/docker,konstruktoid/docker-upstream,paralin/docker,trebonian/docker,nawawi/docker,docker/docker,trebonian/docker,AkihiroSuda/docker,jimjag/docker,Mokolea/docker,djs55/docker,bearstech/moby,bearstech/moby,flavio/docker,yosifkit/docker,thaJeztah/docker,nalind/docker,cpuguy83/docker,moul/docker,moby/moby,AkihiroSuda/docker