message: add missing link text.
diff: Install and configure tools easily.
  </p>
  - <a href="/docs/sharing-and-collaboration/"> More about collaboration. </a>
  + <a href="https://www.youtube.com/watch?v=iYLCHQgj0fE" target="_blank"
  + >Todo</a
  + >
  </div>
  </section>
  