Merge "Add more detail to javadocs for SimPhonebookContract" am: 57a0af04c5 am: dc54e7afdf

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1596935

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I37d21d22c504e16787e1bcc962fd233ff14a60a9