[jfx20] RFR: 8293587: Fix mistakes in FX API docs [v4]

[Nir Lisker]

> Fixes and cleanup in the areas in the linked issue.

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

  Update modules/javafx.graphics/src/main/java/javafx/scene/text/TextFlow.java

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1025/files
  - new: https://git.openjdk.org/jfx/pull/1025/files/fe9c9889..a5632000

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1025&range=03
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1025&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1025.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/1025/head:pull/1025

PR: https://git.openjdk.org/jfx/pull/1025