Fix string inconsistencies in permissions-descriptions.json (#1246)

* Initial plan

* Fix string inconsistencies in permissions-descriptions.json and add validation test

Co-authored-by: jasonjoh <8966342+jasonjoh@users.noreply.github.com>

* Update tests/permissions-descriptions.spec.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jasonjoh <8966342+jasonjoh@users.noreply.github.com>
Co-authored-by: Jason Johnston <jasonjoh@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people