Update families.json (#471)
Update families.json (#471)

added tags for 10 fonts without any tags: Fleur de Leah, Fira Code, Festive, Explora, Estonia, Ephesis, Encode Sans SC, El Messiri, Commissioner, Azeret Mono
katydecorah/font-library,katydecorah/font-library,katydecorah/font-library,katydecorah/font-library