RFR: 8323693: Update some copyright announcements in the new files created in 8234502

[Lei Zaakjyu]

On Sat, 13 Jan 2024 02:21:37 GMT, Lei Zaakjyu <duke at openjdk.org> wrote:

> see 'https://github.com/openjdk/jdk/pull/17398#pullrequestreview-1819022919'

This patch seems trivial. I wonder if it needs two reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/17412#issuecomment-1890866200