RPM guide: both CentOS Stream/RHEL derivatives 8.x and 9.x are supported

Author: michaelklishin

site/install-rpm.md

@@ -63,13 +63,12 @@ CentOS 7 and Fedora releases older than 26 are examples of such distributions.
 Currently the list of supported RPM-based distributions includes
 
  * Fedora 34 through 38
- * [CentOS Stream](https://centos.org/centos-stream/) 9.x
- * [CentOS Stream](https://www.centos.org/centos-stream/) 8.x
- * RedHat Enterprise Linux 8.x
+ * [CentOS Stream](https://centos.org/centos-stream/) 9.x and 8.x
+ * RedHat Enterprise Linux 9.x and 8.x
  * Amazon Linux 2023
- * Rocky Linux
- * Alma Linux
- * Oracle Linux
+ * Rocky Linux 9.x and 8.x
+ * Alma Linux 9.x and 8.x
+ * Oracle Linux 9.x and 8.x
  * openSUSE Leap 15.3 and later versions
 
 The packages may work on other RPM-based distributions