am 487869a8: am 05bca821: am ec54ca15: add redirect from nofification summary page to Notifications doc because this navigation is now flat so each doc is visible in side nav at top

* commit '487869a86bae6246b51cee91bc4ceb543d23b317':
  add redirect from nofification summary page to Notifications doc because this navigation is now flat so each doc is visible in side nav at top