Apply superscript style based on tag, not CSS class.
Apply superscript style based on tag, not CSS class.

This makes it so that <sup> tags returned from the API are rendered
consistently with the ones we place in the snippet.


Former-commit-id: e6a982533168932b27ac322e3667bb62b5f38bba
guilherme-pg/citationhunt,guilherme-pg/citationhunt,eggpi/citationhunt,eggpi/citationhunt,guilherme-pg/citationhunt,guilherme-pg/citationhunt,eggpi/citationhunt,eggpi/citationhunt