Updated Heidi's office hours
Updated Heidi's office hours


Former-commit-id: bbd7220850142623d200dad94187df2343be2ad8
Former-commit-id: 042e0ce17fe6b6619c7efbba010eec6361b6e437
StanfordHCI/cs247,StanfordHCI/cs247,StanfordHCI/cs247