Possible error in docs for 'Notebook best practices'

See [nbdev.fast.ai/tutorials/best_practices.html#putting-it-all-together-an-annotated-example](https://nbdev.fast.ai/tutorials/best_practices.html#all)

In this table, the default value of the `where` parameter (_NoValueType) seems to be interpreted as its type instead, i.e. it is shown in the `Type` column.