fix doctest
fix doctest

blaze/dask,PhE/dask,simudream/dask,hainm/dask,esc/dask,esc/dask,jcrist/dask,simudream/dask,jayhetee/dask,mraspaud/dask,clarkfitzg/dask,mrocklin/dask,dask/dask,freeman-lab/dask,cpcloud/dask,wiso/dask,dask/dask,gameduell/dask,vikhyat/dask,hainm/dask,ContinuumIO/dask,ContinuumIO/dask,marianotepper/dask,ssanderson/dask,jakirkham/dask,minrk/dask,jayhetee/dask,PhE/dask,cowlicks/dask,freeman-lab/dask,ssanderson/dask,mraspaud/dask,pombredanne/dask,mrocklin/dask,mikegraham/dask,marianotepper/dask,jakirkham/dask,blaze/dask,chrisbarber/dask,jcrist/dask,vikhyat/dask,wiso/dask,pombredanne/dask,minrk/dask,clarkfitzg/dask