Clarify new Choreographer Android 13 NDK docs. am: a4aba5d7dd am: 1d1dce8aba am: 62679368f6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/19775140

Change-Id: I6d481178be9dd4b01ae33f8eb9bfc7293dd50619
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>