[jfx24] RFR: 8344367: Fix mistakes in FX API docs

[Nir Lisker]

8344367: Fix mistakes in FX API docs

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Commit messages:
 - Backport 8818ccf8ca883cda49c296ebf6d960c6929a9644

Changes: https://git.openjdk.org/jfx/pull/1704/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1704&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344367
  Stats: 78 lines in 40 files changed: 1 ins; 0 del; 77 mod
  Patch: https://git.openjdk.org/jfx/pull/1704.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1704/head:pull/1704

PR: https://git.openjdk.org/jfx/pull/1704