Refactor - Update bookmark folder strings

[dataports]

:bulb: Description

Updated the the comment, by removing "This should match bookmarks.folder.mobile.label on Android." Since Localizers don’t refer to connections among strings like this.

Requested on the string import PR: https://github.com/mozilla-l10n/firefoxios-l10n/pull/251

:pencil: Checklist

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• [x] Filled in the above information (tickets numbers and description of your work)
• [x] Updated the PR name to follow our PR naming guidelines
• [ ] Wrote unit tests and/or ensured the tests suite is passing
• [ ] When working on UI, I checked and implemented accessibility (minimum Dynamic Text and VoiceOver)
• [ ] If needed, I updated documentation / comments for complex code and public methods
• [ ] If needed, added a backport comment (example @Mergifyio backport release/v120)

[mobiletest-ci-bot]

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:book:	Created 0 files

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