message: update link with Link component
diff: @@ -2,6 +2,7 @@ import track from "./utils/track"
  import * as React from "react"
  import styled from "styled-components"
  import colors from "../styles/colors"
  +import {Link} from "gatsby";
  const Footer = styled.footer`
  padding: 40px 0;
  @@ -47,22 +48,22 @@ export default () => (
  <Footer>
  <Links>
  <li>
  - <a href="/">Home</a>
  + <Link to="/">Home</Link>
  </li>
  <li>
  - <a href="/get-started">Get Started</a>
  + <Link to="/get-started">Get Started</Link>
  </li>
  <li>
  - <a href="/api">API</a>
  + <Link to="/api">API</Link>
  </li>
  <li>
  - <a href="/advanced-usage">Advanced</a>
  + <Link to="/advanced-usage">Advanced</Link>
  </li>
  <li>
  - <a href="/form-builder">Form Builder</a>
  + <Link to="/form-builder">Form Builder</Link>
  </li>
  <li>
  - <a href="/faqs">FAQs</a>
  + <Link to="/faqs">FAQs</Link>
  </li>
  </Links>
  <p>
  