OSDOCS-14382: adding nutanix platform to Agent docs

Author: skopacz1

modules/installation-configuration-parameters.adoc

@@ -124,7 +124,7 @@ ifndef::agent[]
 |The configuration for the specific platform upon which to perform the installation: `aws`, `baremetal`, `azure`, `gcp`, `ibmcloud`, `nutanix`, `openstack`, `powervs`, `vsphere`, or `{}`. For additional information about `platform.<platform>` parameters, consult the table for your specific platform that follows.
 endif::agent[]
 ifdef::agent[]
-|The configuration for the specific platform upon which to perform the installation: `baremetal`, `external`, `none`, or `vsphere`.
+|The configuration for the specific platform upon which to perform the installation: `baremetal`, `external`, `none`, `vsphere`, or `nutanix`.
 endif::agent[]
 |Object
 

modules/understanding-agent-install.adoc

@@ -61,10 +61,13 @@ Recommended cluster resources for the following topologies:
 |HA cluster|3 to 5|2 and above |8 vCPUs|16 GB of RAM|120 GB
 |====
 
+// These supported platforms are also documented in nodes/nodes/nodes-nodes-adding-node-iso.adoc and installation-configuration-parameters.adoc
+
 In the `install-config.yaml`, specify the platform on which to perform the installation. The following platforms are supported:
 
 * `baremetal`
 * `vsphere`
+* `nutanix`
 * `external`
 * `none`
 +

nodes/nodes/nodes-nodes-adding-node-iso.adoc

@@ -26,6 +26,7 @@ The following platforms are supported for this method of adding nodes:
 
 * `baremetal`
 * `vsphere`
+* `nutanix`
 * `none`
 * `external`