Merge "docs: Fixing typos in Context refdoc" into udc-dev am: 6afdda2f am: 4711ed61

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



Change-Id: I5d77b1d6324f57e3a5d3f0be3648f8b65a9e9647
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>