Document recommendation for mirrored configurations

[isc-pbarton]

Resolves #947

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.98%. Comparing base (f16c376) to head (86769bb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #948   +/-   ##
=======================================
  Coverage   50.98%   50.98%           
=======================================
  Files          23       23           
  Lines        3138     3138           
=======================================
  Hits         1600     1600           
  Misses       1538     1538           

☔ 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.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[isc-pbarton]

full disclosure: I originally pushed the commit straight up to origin/main on accident. I fixed with a force push, then changed our branch protections so it won't happen again