docs: Fixing broken {docroot} links am: edaf387f am: 13713355

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20832854



Change-Id: I85361f901e3b0b50f7502779d1a10200f19bb682
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>