Merge "Update Gesture navigation tutorial to match new specs" into sc-dev am: ae2e5d9231 am: 2a594ef1d7

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

Change-Id: I5c6b098e723a207e7b8b9bd787e9618d11685d29