Revise Javadoc for CURSOR_ANCHOR_MONITOR_MODE_CURSOR_RECT

This is a follow-up CL for I3acf2317ae1d763d11 to improve the
Javadoc for CURSOR_ANCHOR_MONITOR_MODE_CURSOR_RECT

BUG: 14323360
Change-Id: Ie8948eda3ce57da282bd82e8e9a44997f6d53245
1 file changed