tree bd41499057427ad55e5bed1ac66690b963594f67
parent 0b8ee9ae508ca5b5467600cf25c0667b437f7b5f
author Jeff Chang <chengjeff@google.com> 1619429987 +0800
committer Jeff Chang <chengjeff@google.com> 1619429987 +0800

Update documentation for activity flags.

1. LAUNCHED_FROM_HISTORY, remove the out of date sentence.
2. NEW_DOCUMENT,add information about documentLaunchMode="never"
3. SINGLE_TOP, refer to launch modes for more information.

Bug: 123083574
Test: build
Change-Id: Id4da7be9993aaf1140c1c709a23ae7ed6d1718f5