RFR: 8344367: Fix mistakes in FX API docs

[Marius Hanl]

On Sun, 17 Nov 2024 21:35:44 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

> A batch of typo and grammar fixes that were found by the spellchecker.
> 
> Integration can wait until RDP 1/2.

The corrections look good to me.

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Marked as reviewed by mhanl (Committer).

PR Review: https://git.openjdk.org/jfx/pull/1642#pullrequestreview-2457975226