adding edits in response to author review comments

[jaybee84]

Purpose

This PR tries to address the review comments in the parent branch. Two comments are still unaddressed:

1. https://github.com/jaybee84/ml-in-rd/pull/253#discussion_r1117984099
2. https://github.com/jaybee84/ml-in-rd/pull/253#discussion_r1117984132

Directions for reviewers

Do the edits address the comments correctly? Did they change the intent of the section as meant by the original author?

Which areas should receive a particularly close look?

All edits

Is there anything that you want to discuss further?

Is the pull request ready for review?

Yes

Manuscript checklist

Unless otherwise noted above, this PR will be considered ready for review when all four items have been checked.

• [ ] All changes to text follow "one sentence per line" [Manubot instructions]
• [ ] All citations follow the Manubot citation instructions
• [ ] All changes or additions to tables follow the Manubot table instructions
• [ ] All figures follow the Manubot figure instructions
• [ ] All terms that need to be added to glossary have been added to #50
• [ ] There are no new spelling errors identified by the Manubot spellchecker

[jaybee84]

I am merging this one to #253 to make it easy for reviewing.