message: fix: add scroll to top on chapter transitions.
diff: @@ -46,6 +46,9 @@ function vsCodeThemeWatcher() {
  var target = document.body;
  observer.observe(target, { attributes : true, attributeFilter : ['class'] });
  +
  + // since page was reloaded, scroll back to the top of the document.
  + window.scrollTo(0, 0);
  }
  window.addEventListener('load', vsCodeThemeWatcher);
  