RFR: 8344367: Fix mistakes in FX API docs [v3]

[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 incrementally with one additional commit since the last revision:

  Revert "Addressed review comment"
  
  This reverts commit 60d4ba92b997be9937f0984761b278b21de816e7.

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1642/files
  - new: https://git.openjdk.org/jfx/pull/1642/files/60d4ba92..6a715137

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1642&range=02
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1642&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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