Merge "Update Gesture navigation tutorial to match new specs" into sc-dev am: ae2e5d9231 am: 38a6d462a2

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

Change-Id: I4278cc685f2a335b4842d0e26b883bcf9ac4396c