Merge "Fix documentation of heart beat sensor" am: 3bef7fe58b am: a3d54aaa88 am: 4807d99163 am: 8570351c5a

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1465663

Change-Id: Id274e65bade2dbafdf213f282bd7343bb9425d18