Summary:
This is not currently an issue within the current site infrastructure, but eliminating these empty lines will ensure the code is not parsed as plain markdown text by some libraries.
Closes https://github.com/facebook/react-native/pull/16917
Differential Revision: D6389212
Pulled By: hramos
fbshipit-source-id: 853ace6f31c32abee36b563198ec79ca3c55176f