Get taxonomy by slug

In the docs (frontpage) it says:

```
wp.taxonomies().taxonomy( 'taxonomy_name' ).term( termIdentifier ): get the term with slug or ID termIdentifier from the taxonomy taxonomy_name
```

This works with the ID, but not with the slug :(. Is this something that changed?

HOST/wp-json/taxonomies/post_tag/terms/42 works
HOST/wp-json/taxonomies/post_tag/terms/sociaal-ondernemerschap doesn't
