Fix UI-doc generation
Fix UI-doc generation

Summary: I noticed the UI components page was empty, the components have been moved and the generator was still looking in the old place.

Reviewed By: passy

Differential Revision: D21131943

fbshipit-source-id: 3310d4f7c88ea0f1e77a13c81eb411f9b1475125

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper