message: fix github call to action
diff: </div>
  <div class="row github_cta">
  <div class="col s8 offset-s2">
  - <p>platform by volunteers, for volunteers</p>
  - <p>Contribute to our open source project</p>
  + <p>platform by volunteers, for volunteers <br>
  + Contribute to our open source project</p>
  <a class="btn btn-large" href="https://github.com/Code4SocialGood/" target="_blank">
  Github Project
  <i class="mdi mdi-github-circle mdi-36px left" name="github"></i></a>
  