 update conf.py with the path of python API
 update conf.py with the path of python API

update the path
from sys.path.insert(0, os.path.abspath("../../pyzoo/"))    
to   sys.path.insert(0, os.path.abspath("../../../pyzoo/"))
intel-analytics/analytics-zoo,intel-analytics/analytics-zoo,intel-analytics/analytics-zoo