Add missing comma.
Add missing comma.


Former-commit-id: 773f27fbce40d4b47ac0a42db00ec93da22fb0fe
guilherme-pg/citationhunt,eggpi/citationhunt,guilherme-pg/citationhunt,eggpi/citationhunt,eggpi/citationhunt,guilherme-pg/citationhunt,eggpi/citationhunt,guilherme-pg/citationhunt