RFR: 8361713: JavaFX API docs overview is missing an intro section

[Kevin Rushforth]

On Fri, 11 Jul 2025 00:17:38 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This PR adds an introductory section to the JavaFX API docs similar to that of the JDK docs.
> 
> Compare the [JavaFX 24 API docs](https://download.java.net/java/GA/javafx24/docs/api/index.html) with the [JDK 24 API docs](https://docs.oracle.com/en/java/javase/24/docs/api/index.html).

Here is what the JavaFX API docs index page will look like after this fix:

<img width="1134" height="955" alt="javafx-docs-overview" src="https://github.com/user-attachments/assets/da2cf601-c008-4ea9-b38c-a9b24ef963fc" />

Reviewers: @arapte and either @johanvos or @tiainen 

@irisclark Can you also take a look?

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PR Comment: https://git.openjdk.org/jfx/pull/1842#issuecomment-3062468904
PR Comment: https://git.openjdk.org/jfx/pull/1842#issuecomment-3062479235