[jfx15] RFR: 8246343: Fix mistakes in FX API docs [v4]

[Arun Joseph]

On Mon, 27 Jul 2020 21:16:41 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> Fixes https://bugs.openjdk.java.net/browse/JDK-8246343 and some additional fixes in the vicinity.
>
> Nir Lisker has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Addressed review comments

modules/javafx.graphics/src/main/java/javafx/scene/layout/HBox.java line 257:

> 256:      * @param spacing the amount of horizontal space between each child
> 257:      * @param children The initial set of children for this pane
> 258:      * @since JavaFX 8.0

Minor typo (The -> the)

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PR: https://git.openjdk.java.net/jfx/pull/274