adding to toc

Author: eni-awowale

_toc.yml

@@ -54,6 +54,7 @@ parts:
       - file: intermediate/datastructures-intermediate.ipynb
       - file: intermediate/BiologyDataset.ipynb
       - file: intermediate/remote_data/index
+      - file: intermediate/hierarchical_zarr_store.ipynb
         sections:
           - file: intermediate/remote_data/cmip6-cloud.ipynb
           - file: intermediate/remote_data/remote-data.ipynb