hg: jdk/sandbox: unixdomainchannels: doc updates

[michael.x.mcmahon at oracle.com]

Changeset: 687371933d53
Author:    michaelm
Date:      2020-05-01 12:06 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/687371933d53

unixdomainchannels: doc updates

! src/java.base/share/classes/java/nio/channels/SocketChannel.java
! src/java.base/share/classes/java/nio/channels/package-info.java
! src/java.base/share/classes/sun/nio/ch/UnixDomainSocketChannelImpl.java