add to table of contents

Author: TomNicholas

_toc.yml

@@ -46,6 +46,7 @@ parts:
       - file: intermediate/hierarchical_computation.ipynb
       - file: intermediate/xarray_and_dask
       - file: intermediate/intro-to-zarr.ipynb
+      - file: intermediate/storage_formats.ipynb
       - file: intermediate/xarray_ecosystem
       - file: intermediate/hvplot
       - file: intermediate/remote_data/index