git: openjdk/jdk: 8295663: Rephrase introduction to testing.md

Mon Nov 7 23:14:17 UTC 2022

Changeset: b6738c18
Author:    Ludvig Janiuk <lujaniuk at openjdk.org>
Committer: Magnus Ihse Bursie <ihse at openjdk.org>
Date:      2022-11-07 23:12:21 +0000
URL:       https://git.openjdk.org/jdk/commit/b6738c1831a75d493982730c5f39a7704e746ba7

8295663: Rephrase introduction to testing.md

Reviewed-by: ihse, erikj

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