Mark Goddard 5846d81c53 Some Rocky Linux 9 cleanups
* Fix description of kolla_base_distro
* Update support matrix notes

Change-Id: Ibc2b9b647766231029fdc2c0e3671e872b1ae366
2022-12-15 10:14:40 +01:00
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2022-12-15 10:14:40 +01:00