RFR: 8314147: Updated the PhongMaterial documentation [v3]

[Andy Goryachev]

On Thu, 22 Feb 2024 22:40:59 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> All of them, since they were derived from the original. I can still tell what the source is.
>
> OK, it will be after the weekend when I can come back to this. Reviewers can assume that only the background will change.

sorry, Nir.  ;-)

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PR Review Comment: https://git.openjdk.org/jfx/pull/1378#discussion_r1500027550