[easy] fix typo in react lib
[easy] fix typo in react lib

Reviewed By: Hans-Halverson

Differential Revision: D25927057

fbshipit-source-id: 24938147f3e6fbf6638c6d074ef09ebd6322b44b

facebook/flow,mroch/flow,facebook/flow,mroch/flow,mroch/flow,facebook/flow,facebook/flow,facebook/flow,facebook/flow,mroch/flow,mroch/flow,mroch/flow,facebook/flow,mroch/flow