Centos -> CentOS

Author: jgehrcke

container-toolkit/supported-platforms.md

@@ -18,8 +18,8 @@ Releases are qualification-tested and expected to work on these platforms:
 | Open Suse/SLES 15.x      | X              |         |                          |
 | Debian Linux 10          | X              |         |                          |
 | Debian Linux 11          | X              |         |                          |
-| Centos 7                 | X              | X       |                          |
-| Centos 8                 | X              | X       | X                        |
+| CentOS 7                 | X              | X       |                          |
+| CentOS 8                 | X              | X       | X                        |
 | RHEL 7.x                 | X              | X       |                          |
 | RHEL 8.x                 | X              | X       | X                        |
 | RHEL 9.x                 | X              | X       | X                        |