fixes `React.Component` subclasses link.
fixes `React.Component` subclasses link.

Summary: Closes https://github.com/facebook/flow/pull/2088

Differential Revision: D3575577

Pulled By: bhosmer

fbshipit-source-id: 2455ba60d7ae67ffd0b73fdd2d15204b8acbd38d

samwgoldman/flow,chenglou/flow,AprilArcus/flow,chenglou/flow,AprilArcus/flow,ylu1317/flow,gabelevi/flow,gabro/flow,jgrund/flow,mroch/flow,AprilArcus/flow,jdelStrother/flow,JonathanUsername/flow,facebook/flow,fletcherw/flow,gabro/flow,jamesgpearce/flow,ylu1317/flow,jeffmo/flow,jamesgpearce/flow,gabro/flow,gabelevi/flow,ylu1317/flow,mroch/flow,ForbesLindesay/flow,chenglou/flow,nmote/flow,claudiopro/flow,jamesgpearce/flow,jdelStrother/flow,samwgoldman/flow,jdelStrother/flow,popham/flow,mroch/flow,samwgoldman/flow,JonathanUsername/flow,AgentME/flow,jdelStrother/flow,jamesgpearce/flow,jamesgpearce/flow,fletcherw/flow,JonathanUsername/flow,samwgoldman/flow,jgrund/flow,jeffmo/flow,fletcherw/flow,jdelStrother/flow,fletcherw/flow,chenglou/flow,AgentME/flow,MichaelDeBoey/flow,TiddoLangerak/flow,AgentME/flow,JonathanUsername/flow,nmote/flow,TiddoLangerak/flow,claudiopro/flow,popham/flow,gabro/flow,popham/flow,claudiopro/flow,ForbesLindesay/flow,jgrund/flow,TiddoLangerak/flow,AprilArcus/flow,gabelevi/flow,gabelevi/flow,jgrund/flow,gabro/flow,popham/flow,nmote/flow,JonathanUsername/flow,MichaelDeBoey/flow,facebook/flow,TiddoLangerak/flow,jeffmo/flow,gabelevi/flow,samwgoldman/flow,jeffmo/flow,mroch/flow,samwgoldman/flow,gabro/flow,ForbesLindesay/flow,AprilArcus/flow,chenglou/flow,samwgoldman/flow,jeffmo/flow,gabelevi/flow,fletcherw/flow,facebook/flow,facebook/flow,facebook/flow,AgentME/flow,nmote/flow,MichaelDeBoey/flow,ForbesLindesay/flow,mroch/flow,mroch/flow,ForbesLindesay/flow,AprilArcus/flow,claudiopro/flow,popham/flow,nmote/flow,gabelevi/flow,facebook/flow,jeffmo/flow,jgrund/flow,jgrund/flow,popham/flow,ylu1317/flow,MichaelDeBoey/flow,jamesgpearce/flow,chenglou/flow,nmote/flow,popham/flow,fletcherw/flow,mroch/flow,ForbesLindesay/flow,jamesgpearce/flow,jdelStrother/flow,AgentME/flow,nmote/flow,TiddoLangerak/flow,facebook/flow,MichaelDeBoey/flow,JonathanUsername/flow,JonathanUsername/flow,claudiopro/flow,ylu1317/flow