git: openjdk/jdk: jdk26: 8375683: Add notes for sctp tests

[SendaoYan]

Changeset: 6ac3ce01
Branch: jdk26
Author:    SendaoYan <syan at openjdk.org>
Date:      2026-01-27 02:25:05 +0000
URL:       https://git.openjdk.org/jdk/commit/6ac3ce013e51ecc3c004d8f03c580b40ddf437ff

8375683: Add notes for sctp tests

Reviewed-by: erikj, iris
Backport-of: 932556026d6d49fe6f74d4ec4afcb72448611766

! doc/testing.html
! doc/testing.md