hg: jdk9/sandbox/jdk: 8161455: Missing word in API documentation

[chris.hegarty at oracle.com]

Changeset: 9446c534f022
Author:    bpb
Date:      2016-07-15 13:23 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/9446c534f022

8161455: Missing word in API documentation
Summary: Change "file has created" to "file has been created" in two places.
Reviewed-by: rriggs, alanb

! src/java.base/share/classes/java/nio/file/Files.java