expand work-stealing docs
expand work-stealing docs

dask/distributed,broxtronix/distributed,broxtronix/distributed,mrocklin/distributed,mrocklin/distributed,dask/distributed,amosonn/distributed,mrocklin/distributed,amosonn/distributed,blaze/distributed,dask/distributed,blaze/distributed,dask/distributed,amosonn/distributed,broxtronix/distributed