Fix small typo
Fix small typo

Summary:
Hi guys,

A small typo found in the doc :)
Closes https://github.com/facebook/react-native/pull/15888

Differential Revision: D5809251

Pulled By: TheSavior

fbshipit-source-id: 7a2ca8f2cbca81aa2059ee619a8c6087256e39a6

pandiaraj44/react-native,dikaiosune/react-native,Bhullnatik/react-native,facebook/react-native,rickbeerendonk/react-native,janicduplessis/react-native,javache/react-native,myntra/react-native,jevakallio/react-native,kesha-antonov/react-native,hoangpham95/react-native,hammerandchisel/react-native,facebook/react-native,janicduplessis/react-native,cdlewis/react-native,arthuralee/react-native,kesha-antonov/react-native,javache/react-native,kesha-antonov/react-native,arthuralee/react-native,pandiaraj44/react-native,Bhullnatik/react-native,javache/react-native,hoangpham95/react-native,hammerandchisel/react-native,jevakallio/react-native,exponentjs/react-native,Bhullnatik/react-native,ptmt/react-native-macos,arthuralee/react-native,exponentjs/react-native,Bhullnatik/react-native,cdlewis/react-native,rickbeerendonk/react-native,exponent/react-native,hammerandchisel/react-native,kesha-antonov/react-native,exponent/react-native,hoangpham95/react-native,Bhullnatik/react-native,dikaiosune/react-native,jevakallio/react-native,javache/react-native,rickbeerendonk/react-native,janicduplessis/react-native,hoastoolshop/react-native,ptmt/react-native-macos,hoastoolshop/react-native,hoastoolshop/react-native,dikaiosune/react-native,pandiaraj44/react-native,hammerandchisel/react-native,jevakallio/react-native,facebook/react-native,exponentjs/react-native,hoastoolshop/react-native,pandiaraj44/react-native,janicduplessis/react-native,ptmt/react-native-macos,exponentjs/react-native,cdlewis/react-native,rickbeerendonk/react-native,kesha-antonov/react-native,janicduplessis/react-native,facebook/react-native,frantic/react-native,hammerandchisel/react-native,rickbeerendonk/react-native,exponent/react-native,cdlewis/react-native,Bhullnatik/react-native,myntra/react-native,exponentjs/react-native,myntra/react-native,dikaiosune/react-native,javache/react-native,exponent/react-native,janicduplessis/react-native,myntra/react-native,javache/react-native,facebook/react-native,hammerandchisel/react-native,exponentjs/react-native,hoastoolshop/react-native,hoastoolshop/react-native,facebook/react-native,jevakallio/react-native,frantic/react-native,dikaiosune/react-native,kesha-antonov/react-native,hoangpham95/react-native,exponent/react-native,myntra/react-native,frantic/react-native,janicduplessis/react-native,ptmt/react-native-macos,pandiaraj44/react-native,hammerandchisel/react-native,kesha-antonov/react-native,hoangpham95/react-native,jevakallio/react-native,dikaiosune/react-native,jevakallio/react-native,javache/react-native,pandiaraj44/react-native,javache/react-native,frantic/react-native,cdlewis/react-native,pandiaraj44/react-native,cdlewis/react-native,janicduplessis/react-native,rickbeerendonk/react-native,myntra/react-native,exponent/react-native,hoangpham95/react-native,ptmt/react-native-macos,exponent/react-native,facebook/react-native,Bhullnatik/react-native,arthuralee/react-native,pandiaraj44/react-native,Bhullnatik/react-native,jevakallio/react-native,cdlewis/react-native,jevakallio/react-native,myntra/react-native,rickbeerendonk/react-native,myntra/react-native,exponentjs/react-native,rickbeerendonk/react-native,exponent/react-native,ptmt/react-native-macos,rickbeerendonk/react-native,kesha-antonov/react-native,exponentjs/react-native,frantic/react-native,hammerandchisel/react-native,facebook/react-native,hoastoolshop/react-native,myntra/react-native,hoastoolshop/react-native,arthuralee/react-native,ptmt/react-native-macos,hoangpham95/react-native,javache/react-native,dikaiosune/react-native,kesha-antonov/react-native,ptmt/react-native-macos,cdlewis/react-native,cdlewis/react-native,hoangpham95/react-native,dikaiosune/react-native,facebook/react-native