Financial: principle -> principal (#5614)

* Financial: principle -> principal

The originally invested amount of money: `principal`
-- https://www.grammarly.com/blog/principle-principal/

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Christian Clauss committed 4y ago

cb4dc197238e670d150eaebd8f387670f7a54377

Parent: c41bb49

Committed by GitHub <noreply@github.com> on 10/26/2021, 4:41:32 PM