Bump react-dom from 16.10.1 to 16.10.2 in /website (#6613)
Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) from 16.10.1 to 16.10.2.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v16.10.2/packages/react-dom)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: null <27856297+dependabot-preview[bot]@users.noreply.github.com>