Software checklist: clarify kernel version requirements (#1455)

Prompted by a customer conversation. Not staged.

Matching `miniohq/aistor-object-store-docs` PR:
https://github.com/miniohq/aistor-object-store-docs/pull/41

Author: feorlen

source/operations/checklists/software.rst

@@ -20,7 +20,8 @@ MinIO Pre-requisites
    :width: 100%
 
    * - :octicon:`circle`
-     - Servers running a Linux operating system with a 5.x+ kernel, such as Red Hat Enterprise Linux (RHEL) 9 or Ubuntu LTS 20.04+
+     - Servers running a Linux operating system with a 5.x+ kernel, such as Red Hat Enterprise Linux (RHEL) 9 or Ubuntu LTS 20.04+.
+       Ensure the chosen OS uses LTS and in-support releases of the Linux Kernel 5.x or 6.x series.
 
    * - :octicon:`circle`
      - A method to synchronize time servers across nodes, such as with ``ntp``, ``timedatectl`` or ``timesyncd``.