RFR: 8202: JMC 9 release notes [v4]

[Marcus Hirt]

> First draft! Please let me know what I missed. :)

Marcus Hirt has updated the pull request incrementally with one additional commit since the last revision:

  Fixing typos

-------------

Changes:
  - all: https://git.openjdk.org/jmc/pull/555/files
  - new: https://git.openjdk.org/jmc/pull/555/files/fe3d25ff..ab63bff9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jmc&pr=555&range=03
 - incr: https://webrevs.openjdk.org/?repo=jmc&pr=555&range=02-03

  Stats: 7 lines in 1 file changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jmc/pull/555.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/555/head:pull/555

PR: https://git.openjdk.org/jmc/pull/555