[11] RFR: JDK-8198228: Spec clarification: j.u.Locale.getDisplayName()

[naoto.sato at oracle.com]

Hello,

Please review this small doc-only fix for this issue:

https://bugs.openjdk.java.net/browse/JDK-8198228

The proposed changeset is located at:

http://cr.openjdk.java.net/~naoto/8198228/webrev.00/

It is just to clarify the field separator in locale display names. 
Corresponding CSR (8198236) is already approved.

Naoto