Merge "Update floss containerized build docs" am: 725eb425 am: 64b56025 am: 943143dd

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2360892



Change-Id: Ifdb8612b4e30f05dd9026b1926d5078f9b79aac6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>