[jfx17u] RFR: 8286774: Replace openjdk.java.net with openjdk.org

[Ambarish Rapte]

On Fri, 19 Aug 2022 14:34:19 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Backport fix to substitute openjdk.java.net with openjdk.org. Most of the patch applied cleanly, but there were a few files modified in mainline that don't exist in jfx17u (so excluded from backport). Additionally, I had to manually update the following:
> 
> 
> CONTRIBUTING.md
> README.md
> doc-files/release-notes-17.0.1.md
> doc-files/release-notes-17.0.2.md

Marked as reviewed by arapte (Reviewer).

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PR: https://git.openjdk.org/jfx17u/pull/80