SFMono-Regular is not recognized by Firefox, uses the standard name "SF Mono"

[dantezhu]

Prerequisites

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• This pull request fixes a bug.
• This pull request adds a feature.
• This pull request introduces breaking change.

Description

SFMono-Regular is not recognized by Firefox, uses the standard name "SF Mono".

Issues Resolved

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Checklist

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General

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• Explain why and how the changes were necessary and implemented respectively
• Reference issue with #<ISSUE_NO> if applicable

Resources

• If you have changed any SCSS code, run make release to regenerate all CSS files

Contributors

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[dantezhu]

@luizdepra Pls help.

[luizdepra]

Looks good. Thank you. :D