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 <[email protected]>

* Update tests/permissions-descriptions.spec.js

Co-authored-by: Copilot <[email protected]>

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Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: jasonjoh <[email protected]>
Co-authored-by: Jason Johnston <[email protected]>
Co-authored-by: Copilot <[email protected]>

Author: 3 people