minor tweaks to docs

[kelly-sovacool]

Changes

Changed rds -> renee_ds to avoid confusion with R Data Serialization.

Issues

NA

PR Checklist

(~Strikethrough~ any points that are not applicable.)

• [x] This comment contains a description of changes with justifications, with any relevant issues linked.
• ~[ ] Write unit tests for any new features, bug fixes, or other code changes.~
• ~[ ] Update the docs if there are any API changes (roxygen comments, vignettes, readme, etc.).~
• [x] Update NEWS.md with a short description of any user-facing changes and reference the PR number. Guidelines: https://keepachangelog.com/en/1.1.0/
• [x] Run devtools::check() locally and fix all notes, warnings, and errors.