OSDOCS-7875-main: Documented the RN for vSphere templates parameter

Author: dfitzmau

modules/installation-configuration-parameters.adoc

@@ -1745,7 +1745,7 @@ Optional VMware vSphere machine pool configuration parameters are described in t
 l|platform
     vsphere
       clusterOSImage
-|The location from which the installation program downloads the {op-system-first} image. Before setting a path value for this parameter, ensure that the {op-system} image's version matches the version of {op-system} that you installed on your {product-title} cluster.
+|The location from which the installation program downloads the {op-system-first} image. Before setting a path value for this parameter, ensure that the default {op-system} boot image in the {product-title} release matches the {op-system} image template or virtual machine version; otherwise, cluster installation might fail.
 |An HTTP or HTTPS URL, optionally with a SHA-256 checksum. For example, `\https://mirror.openshift.com/images/rhcos-<version>-vmware.<architecture>.ova`.
 
 l|platform