Fixed tip link on homepage.
Fixed tip link on homepage.



Former-commit-id: 26bf098f68e122b19b06393718f6a0ed9715d761
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine