Merge "docs: Clarify when certificate is self-signed" into main am: 69bbd1c8...

Merge "docs: Clarify when certificate is self-signed" into main am: 69bbd1c8 am: 76ee8400 am: a14b6b88 am: 8aa17221 am: 2b33511f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2779947



Change-Id: I66f1abef486c7bef3356e6adbc1acbc8897dfd25
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>