git: openjdk/mobile: 8243587: Missing comma in copyright header

[duke]

Changeset: 7fb48971
Author:    Kim Barrett <kbarrett at openjdk.org>
Date:      2020-04-26 22:28:19 +0000
URL:       https://git.openjdk.java.net/mobile/commit/7fb48971

8243587: Missing comma in copyright header

Added comma.

Reviewed-by: iignatyev

! src/jdk.incubator.jpackage/share/classes/jdk/incubator/jpackage/internal/DottedVersion.java