git: openjdk/jdk: master: 8357000: Write overview documentation for start of release changes

[Joe Darcy]

Changeset: 77c110c3
Branch: master
Author:    Joe Darcy <darcy at openjdk.org>
Date:      2025-06-04 20:03:48 +0000
URL:       https://git.openjdk.org/jdk/commit/77c110c309739c2e10c9b321914309affe749e6d

8357000: Write overview documentation for start of release changes

Reviewed-by: erikj, iris, ihse, dholmes

+ doc/starting-next-release.html
+ doc/starting-next-release.md