Merge "docs: Fixing typos in Context refdoc" into udc-dev am: 6afdda2f am: ee951fa3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23752601



Change-Id: I2f6e75dd74714de270af113f9b9fe5fba94ed1de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>