Summary:
This PR updates the example of scrollTo that uses `;` instead of `,` to separate x, y and animated values.
Closes https://github.com/facebook/react-native/pull/13318
Differential Revision: D4913285
Pulled By: javache
fbshipit-source-id: 02c219fbeae0f9e3b63f4b64eb4cca34868641c1