Updates "add" layer in HLG docs example (#5237)
Updates "add" layer in HLG docs example (#5237)


mrocklin/dask,blaze/dask,ContinuumIO/dask,dask/dask,mrocklin/dask,jakirkham/dask,blaze/dask,dask/dask,jakirkham/dask,ContinuumIO/dask