OSDOCS-9002: Note about default host config values

Author: skopacz1

modules/installing-ocp-agent-inputs.adoc

@@ -44,6 +44,7 @@ This is the preferred method for the Agent-based installation. Using {ztp} manif
 
 . Create the `install-config.yaml` file:
 +
+--
 [source,terminal]
 ----
 $ cat << EOF > ./my-cluster/install-config.yaml
@@ -70,19 +71,24 @@ networking:
   networkType: OVNKubernetes <3>
   serviceNetwork:
   - 172.30.0.0/16
-platform:
+platform: <4>
   none: {}
-pullSecret: '<pull_secret>' <4>
-sshKey: '<ssh_pub_key>' <5>
+pullSecret: '<pull_secret>' <5>
+sshKey: '<ssh_pub_key>' <6>
 EOF
 ----
-+
 <1> Specify the system architecture, valid values are `amd64` and `arm64`.
 <2> Required. Specify your cluster name.
 <3> Specify the cluster network plugin to install. The supported values are `OVNKubernetes` and `OpenShiftSDN`. The default value is `OVNKubernetes`.
-<4> Specify your pull secret.
-<5> Specify your SSH public key.
-
+<4> Specify your platform.
++
+[NOTE]
+====
+For bare metal platforms, host settings made in the platform section of the `install-config.yaml` file are used by default, unless they are overridden by configurations made in the `agent-config.yaml` file.
+====
+<5> Specify your pull secret.
+<6> Specify your SSH public key.
+--
 +
 [NOTE]
 ====