Remove RST formatting in docstrings outside of API code

[maddenp-cu]

Synopsis

Since only docstrings in API code will be rendered to HTML, RST formatting elsewhere is unnecessary, inconsistent, and requires maintenance.

Type

• Documentation

Impact

• This is a non-breaking change (existing functionality continues to work as expected)

Checklist

• I have added myself and any co-authors to the PR's Assignees list.
• I have reviewed the documentation and have made any updates necessitated by this change.
• Where helpful, I have written comments in this PR's Files changed view to assist reviewers.