fix(docs): add missing field to populate example - @gregfenton

[gregfenton]

I believe the result would not filter down to just "email", or at least the example doesn't seem to indicate how that would occur.

I also removed the "equivalent string notation" as I can't find what that would be for childAlias. (Is there documentation of the string notation somewhere? It seems to be embedded into the Object notation/API documentation?)

Description

Check List

If not relevant to pull request, check off as complete

• [ ] All tests passing
• [ ] Docs updated with any changes or examples if applicable
• [ ] Added tests to ensure new feature(s) work properly

Relevant Issues

[codecov[bot]]

Codecov Report

Merging #900 into master will not change coverage by %. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #900   +/-   ##
=======================================
  Coverage   88.87%   88.87%           
=======================================
  Files          29       29           
  Lines         791      791           
=======================================
  Hits          703      703           
  Misses         88       88