am 7e78827e: am b0cab80d: 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 '7e78827e935d0dadd93d53f78835a7b6fe141918':
  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