hg: jdk/sandbox: http-client-branch: minor doc change

[chris.hegarty at oracle.com]

Changeset: bf59e29eff0c
Author:    chegar
Date:      2017-11-17 10:45 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/bf59e29eff0c

http-client-branch: minor doc change

! src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/HttpHeaders.java