fix cli settings help message formatting

[atravitz]

resolves #1176

Tricky to make this look nice on both the CLI and in RST for the docs rendering.

Checklist

• Added a news entry

Developers certificate of origin

• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.58%. Comparing base (5808444) to head (534ba1f).
Report is 229 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1225      +/-   ##
==========================================
- Coverage   94.21%   92.58%   -1.63%     
==========================================
  Files         141      141              
  Lines       10685    10685              
==========================================
- Hits        10067     9893     -174     
- Misses        618      792     +174     

Flag	Coverage Δ
fast-tests	92.58% <100.00%> (?)
slow-tests	?

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[IAlibay]

lgtm thanks!

[github-actions]

No API break detected ✅