RFR: 8344367: Fix mistakes in FX API docs [v4]

[Nir Lisker]

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

Nir Lisker has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains seven commits:

 - Fixed javadoc for internal Node methods
 - Merge remote-tracking branch 'origin/master' into 8344367_Fix_mistakes_in_FX_API_docs
 - Revert "Addressed review comment"
   
   This reverts commit 60d4ba92b997be9937f0984761b278b21de816e7.
 - Addressed review comment
 - More corrections
 - Batch typo fixes
 - Fix mistakes in OpenJFX docs

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

Changes: https://git.openjdk.org/jfx/pull/1642/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1642&range=03
  Stats: 78 lines in 40 files changed: 1 ins; 0 del; 77 mod
  Patch: https://git.openjdk.org/jfx/pull/1642.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1642/head:pull/1642

PR: https://git.openjdk.org/jfx/pull/1642