Fix typo in example
Fix typo in example

Summary:
._.
Closes https://github.com/facebook/relay/pull/2328

Differential Revision: D7026040

Pulled By: jstejada

fbshipit-source-id: 4a7e7a989f46d8ec7ff9374ab0d9f774eac295ea

wincent/relay,wincent/relay,josephsavona/relay,facebook/relay,wincent/relay,facebook/relay,xuorig/relay,cpojer/relay,yungsters/relay,zpao/relay,voideanvalue/relay,atxwebs/relay,kassens/relay,kassens/relay,iamchenxin/relay,cpojer/relay,voideanvalue/relay,freiksenet/relay,yungsters/relay,voideanvalue/relay,kassens/relay,zpao/relay,iamchenxin/relay,facebook/relay,yungsters/relay,iamchenxin/relay,voideanvalue/relay,facebook/relay,xuorig/relay,atxwebs/relay,dbslone/relay,iamchenxin/relay,josephsavona/relay,cpojer/relay,kassens/relay,cpojer/relay,atxwebs/relay,josephsavona/relay,voideanvalue/relay,zpao/relay,xuorig/relay,atxwebs/relay,facebook/relay,freiksenet/relay,xuorig/relay,kassens/relay,wincent/relay,xuorig/relay,kassens/relay,xuorig/relay,facebook/relay,dbslone/relay,freiksenet/relay,wincent/relay,wincent/relay,voideanvalue/relay