RFR: 8331077 : nroff man page update for jar tool

[Weibing Xiao]

On Wed, 1 May 2024 17:52:13 GMT, Weibing Xiao <wxiao at openjdk.org> wrote:

> nroff man page update for jar tool. <br>
> This update is caused by the change of https://bugs.openjdk.org/browse/JDK-8318971. While the .md man pages got updated in other repos, the corresponding nroff man page was never updated in OpenJDK repos

reverted to "JDK 23-ea"

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PR Comment: https://git.openjdk.org/jdk/pull/19039#issuecomment-2088901772