Update changesheets examples

[aclum]

...

Related subsystem(s)

• Runtime API (except the Minter)
• Minter
• Dagster
• Project documentation (in the docs directory)
• Translators (metadata ingest pipelines)
• MongoDB migrations
• Other

Testing

• I tested these changes (explain below)
• I did not test these changes

I tested these changes using changesheets:validate on runtime prod.

Documentation

• I have not checked for relevant documentation yet (e.g. in the docs directory)
• I have updated all relevant documentation so it will remain accurate
• Other (explain below)

this is a documentation update

Maintainability

• Every Python function I defined includes a docstring (test functions are exempt from this)
• Every Python function parameter I introduced includes a type hint (e.g. study_id: str)
• All "to do" or "fix me" Python comments I added begin with either # TODO or # FIXME
• I used black to format all the Python files I created/modified
• The PR title is in the imperative mood (e.g. "Do X") and not the declarative mood (e.g. "Does X" or "Did X")

[eecavanna]

I tested these changes using changesheets:validate on runtime prod.

Works for me — thanks for testing them!

[dwinston]

@eecavanna @aclum this fails on https://api-dev.microbiomedata.org/docs#/metadata/validate_changesheet_metadata_changesheets_validate_post :

{
  "detail": "slot 'None' not found for 'Study'"
}

and is causing CI to fail for a current PR.

[dwinston]

I realize now that this PR, because it did not change e.g. a *.py file, did not trigger a CI run.

[eecavanna]

Thanks for bringing this to our attention, @dwinston.

1. I will file a ticket about this regression: Runtime API reports example changesheet as being invalid #844
2. I will file a ticket about adding this directory to the list of directories in which changes trigger a CI run (in an attempt to avoid this situation in the future): GHA does not run automated tests when example changesheets are modified #843