Question: Is it possible to index items nested within a data file subfolder?

[gitjul]

How can I index items in a data file subfolder?

For example, using an example from the Jekyll docs, how would I index members specified in _data/orgs/jekyll.yml like below?

username: jekyll
name: Jekyll
members:
  - name: Tom Preston-Werner
    github: mojombo

  - name: Parker Moore
    github: parkr

I can't remove the nesting.

Ruby version used:

2.6.3p62

Jekyll version used:

4.0.0