Update: Fixing typo on Modal comment code � (#28057)
Update: Fixing typo on Modal comment code � (#28057)

Summary:
This PR only fixes a little typo that I noticed working on the documentation of React Native website taking reference from this source code, and then saw it 😅

## Changelog

[General] [Fixed] - Fixed typo from `inly` to `only` inside `Modal.js` library code.
Pull Request resolved: https://github.com/facebook/react-native/pull/28057

Test Plan: Not needed.

Reviewed By: cpojer

Differential Revision: D20197178

Pulled By: TheSavior

fbshipit-source-id: 372f263a16a2de665ced7c0d3f10e3897777d19f

hammerandchisel/react-native,facebook/react-native,janicduplessis/react-native,exponentjs/react-native,exponentjs/react-native,hammerandchisel/react-native,arthuralee/react-native,facebook/react-native,javache/react-native,pandiaraj44/react-native,exponentjs/react-native,exponentjs/react-native,pandiaraj44/react-native,janicduplessis/react-native,facebook/react-native,hoangpham95/react-native,janicduplessis/react-native,exponentjs/react-native,myntra/react-native,myntra/react-native,hoangpham95/react-native,pandiaraj44/react-native,javache/react-native,javache/react-native,exponent/react-native,arthuralee/react-native,pandiaraj44/react-native,facebook/react-native,facebook/react-native,exponent/react-native,hammerandchisel/react-native,arthuralee/react-native,javache/react-native,hoangpham95/react-native,arthuralee/react-native,exponentjs/react-native,myntra/react-native,facebook/react-native,janicduplessis/react-native,hoangpham95/react-native,hammerandchisel/react-native,myntra/react-native,pandiaraj44/react-native,hammerandchisel/react-native,javache/react-native,myntra/react-native,javache/react-native,myntra/react-native,hoangpham95/react-native,exponent/react-native,exponent/react-native,hoangpham95/react-native,facebook/react-native,facebook/react-native,hoangpham95/react-native,facebook/react-native,pandiaraj44/react-native,myntra/react-native,hoangpham95/react-native,exponent/react-native,janicduplessis/react-native,pandiaraj44/react-native,exponentjs/react-native,myntra/react-native,hammerandchisel/react-native,exponent/react-native,exponent/react-native,myntra/react-native,javache/react-native,janicduplessis/react-native,janicduplessis/react-native,arthuralee/react-native,pandiaraj44/react-native,janicduplessis/react-native,hammerandchisel/react-native,exponent/react-native,exponentjs/react-native,javache/react-native,hammerandchisel/react-native,javache/react-native