[jfx24u] RFR: 8304008: Update README.md and CONTRIBUTING.md for jfx update repos

Wed Jan 22 19:12:00 UTC 2025

On Wed, 22 Jan 2025 17:34:58 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This is a copy of the jfx23u README and CONTRIBUTING docs, changing 23 to 24.

I confirm this is a PR mentioning OpenJFX 24, targeting jfx24u so all good :)

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

Marked as reviewed by jvos (Reviewer).

PR Review: https://git.openjdk.org/jfx24u/pull/2#pullrequestreview-2567945501