Intake-ESM Catalog include a column of 'long_name' instead of 'variable_long_name'

[smartlixx]

In using-intake-catalog.ipynb, the catalog returned only includes a column long_name rather than variable_long_name, which was referenced in the code many times and will result in runtime error.

If there is a change in the catalog after this notebook was written, I can draft a PR to change all the occurrences of variable_long_name to long_name.