Update events-overview.md
Update events-overview.md

Summary: Pull Request resolved: https://github.com/facebook/litho/pull/507

Reviewed By: passy

Differential Revision: D14299806

Pulled By: muraziz

fbshipit-source-id: c7b609d4bec40dc056dd214d9396635df4ea3098

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