Update pivotal url
Update pivotal url

Signed-off-by: Colin Schoen <db9f0369fca3c6c82031fd33aeed6b155234ccfe@berkeley.edu>

colinschoen/enrollme,colinschoen/enrollme,adnanhemani/enrollme,adnanhemani/enrollme,adnanhemani/enrollme,colinschoen/enrollme