hg: amber/amber: adding missing new line at the end of runtime package

[vicente.romero at oracle.com]

Changeset: 1fd8fc2861ce
Author:    vromero
Date:      2019-11-27 22:46 -0500
URL:       https://hg.openjdk.java.net/amber/amber/rev/1fd8fc2861ce

adding missing new line at the end of runtime package

! src/java.base/share/classes/java/lang/runtime/package-info.java