docs: Fixed summary fragment and removed typo am: 8167356f am: 1d0ed15b am: a73ffd40

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20835757



Change-Id: I813004e04c20b0c123b75c8d8537d5b6914ac4d7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>