Update smart_facet.html
Update smart_facet.html

Added parentheses around unit_label (and separated into separate <span> element with conditional tag)

tetherless-world/satoru,tetherless-world/satoru,tetherless-world/satoru,tetherless-world/graphene,tetherless-world/graphene,tetherless-world/graphene,tetherless-world/satoru,tetherless-world/graphene