[jfx22u] RFR: 8304008: Update README.md and CONTRIBUTING.md for jfx update repos

[Johan Vos]

On Fri, 12 Jan 2024 00:00:43 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Backport the changes to the README and CONTTRIBUTING guidelines for update releases. There are two commits: the first is a clean backport of the fix that went into jfx21u. The second is a simple substitution changing 21 to 22 in the two files.

I compared the result with the 17u CONTRIBUTING.md and README.md and apart from the 17-22 change, it is similar.

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Marked as reviewed by jvos (Reviewer).

PR Review: https://git.openjdk.org/jfx22u/pull/2#pullrequestreview-1817559198