Fix error in flow types
Fix error in flow types

Summary:
Previously type Options had excludeActivityTypes property, but in RCTActionSheetManager.m and docs this property is named excludedActivityTypes.

<!--
Thank you for sending the PR! We appreciate you spending the time to work on these changes.

Help us understand your motivation by explaining why you decided to make this change.

You can learn more about contributing to React Native here: http://facebook.github.io/react-native/docs/contributing.html

Happy contributing!

-->

Want to fix error in flow types

Actually, it seems there aren't any need for test plan for this PR. Just fix a mistyping error.
Closes https://github.com/facebook/react-native/pull/15881

Differential Revision: D5813539

Pulled By: ericnakagawa

fbshipit-source-id: 7d1269d4c177f920869bf6554f14af6db7a741ee

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