RFR: Update README.md to be used as Release Notes for Leyden EA 2 [v2]

[Ioi Lam]

On Wed, 27 Aug 2025 18:46:11 GMT, Dan Heidinga <heidinga at openjdk.org> wrote:

>> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Added info about CPU matches and diagnosing loading errors; fixed typos
>
> Thanks Ioi for updating this!

Thanks @DanHeidinga @vnkozlov for the review

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PR Comment: https://git.openjdk.org/leyden/pull/92#issuecomment-3229886227