Fix code block annotation
Fix code block annotation

Summary: Doesn't look consistent right now on https://fblitho.com/docs/getting-started.html

Reviewed By: IanChilds

Differential Revision: D6076307

fbshipit-source-id: 9af7c64af32541569f966121236e4a8665d0a2f4

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho