Merge "doc: Update instruction for downloading ferrochrome image" into main am: b90bee55cd am: d51ade8c11

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/3091626

Change-Id: I444f326eeba85c74af023d81924d4eecac67c90b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>