[jfx16] RFR: 8252389: Fix mistakes in FX API docs [v3]

[Nir Lisker]

> The usual doc fixes (for OpenJFX 16).
> 
> Can wait until RDP2 to see if something else comes up.

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

  Addressed review comments

-------------

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/380/files
  - new: https://git.openjdk.java.net/jfx/pull/380/files/ba164e55..5ba0799d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=380&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=380&range=01-02

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jfx/pull/380.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/380/head:pull/380

PR: https://git.openjdk.java.net/jfx/pull/380