Updates Addy email sender labels to use `@` instead of ` at ` for easier viewing
When receiving an email at an Addy.io alias, in ProtonMail the actual sender email address can be difficult parse at a glance. This script changes all of those labels from
Greasy Fork 'noreply at greasyfork.org'<[email protected]>
to
Greasy Fork '[email protected]'<[email protected]>
