Symbols provided in customEvents don't get the "fas fa-fw fa-" prefix,
which according to the docs they should. This fixes that.
Hello and thank you for wanting to contribute to the MagicMirror²
project
**Please make sure that you have followed these 4 rules before
submitting your Pull Request:**
> 1. Base your pull requests against the `develop` branch.
>
> 2. Include these infos in the description:
>
> - Does the pull request solve a **related** issue?
> - If so, can you reference the issue like this `Fixes
#<issue_number>`?
> - What does the pull request accomplish? Use a list if needed.
> - If it includes major visual changes please add screenshots.
>
> 3. Please run `npm run lint:prettier` before submitting so that
> style issues are fixed.
>
> 4. Don't forget to add an entry about your changes to
> the CHANGELOG.md file.
**Note**: Sometimes the development moves very fast. It is highly
recommended that you update your branch of `develop` before creating a
pull request to send us your changes. This makes everyone's lives
easier (including yours) and helps us out on the development team.
Thanks again and have a nice day!
Co-authored-by: veeck <michael@veeck.de>
