RFR: 8314147: Updated the PhongMaterial documentation [v6]

[Nir Lisker]

On Tue, 27 Feb 2024 11:24:08 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

> PhongMaterial is not suitable for surfaces that reflect or refract the incident light.

But it does reflect the incident light as explained in the paragraphs before.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1378#discussion_r1506179403