Fix typo in doc strings for r2

[awadell1]

Variant is :MacFadden in the docs, but :McFadden in the if else branch. Googling / Wikipedia confirms that "McFadden" is correct

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (20b38e1) to head (2329ea0).
Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #33   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         2    -1     
  Lines           37        36    -1     
=========================================
- Hits            37        36    -1     

☔ 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.

[palday]

@awadell1 can you also do a patch version bump in Project.toml?

[awadell1]

@palday Done! Should be good to go 😄