message: Fix "broken" link
diff: @@ -21,7 +21,7 @@ function HomepageHeader() {
  </Link>
  <Link
  className="button button--secondary button--lg"
  - to="/react-querybuilder">
  + href="https://react-querybuilder.github.io/react-querybuilder">
  Try it out
  </Link>
  </div>
  