[jfx19] RFR: 8286678: Fix mistakes in FX API docs [v5]

[Nir Lisker]

> Fixes the mistakes in the JBS ticket and some additional minor corrections.

Nir Lisker has updated the pull request incrementally with one additional commit since the last revision:

  Addressed review comment

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Changes:
  - all: https://git.openjdk.org/jfx/pull/880/files
  - new: https://git.openjdk.org/jfx/pull/880/files/e9df3a27..c537fa93

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=880&range=04
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=880&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/880.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/880/head:pull/880

PR: https://git.openjdk.org/jfx/pull/880