Fix localizations - #25321

Description

b711cf4 lead to ... something ... breaking with our locales, and after the locale extraction our CI failed to build. This commit fixes the build.

Context

Little more detail on the timeline:

• b711cf4 updated some strings, that start and end with \n (CI passes)
• b9846fc extracts the new strings (CI was skipped, so unclear)
• localizations from pontoon are committed that don't start and end with \n (CI fails)

Testing

Checklist

• Add #ISSUENUM at the top of your PR to an existing open issue in the mozilla/addons repository.
• Successfully verified the change locally.
• The change is covered by automated tests, or otherwise indicated why doing so is unnecessary/impossible.
• Add before and after screenshots (Only for changes that impact the UI).
• Add or update relevant docs reflecting the changes made.