Added CentOS Stream

Author: mnocon

docs/getting_started/requirements.md

@@ -40,6 +40,7 @@ Recommendation for production setups is to use Varnish/Fastly, Redis/Memcached,
     |Ubuntu "Jammy Jellyfish"| 22.04 |
     |Ubuntu "Noble Numbat"| 24.04 |
     |RHEL / CentOS | 8.1-8.5+ |
+    |CentOS Stream | 9 |
 
     If you see a "+" next to the product version, it indicates a recommended version or higher within the same major release.
     For example, "1.18+" means any 1.x version equal to or higher than 1.18, but not 2.x.