Merge "Update Gesture navigation tutorial to match new specs" into sc-dev am: ae2e5d9231 am: c564a2487c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15099479

Change-Id: I5f52e76ad326b4027369af33c280b3fd80ec43e4