Minor Doc improvements Metal3 (#1011)

* Changed macro version-sl-micro to version-operatingsystem

* Some minor changes to Metal3 language

* Addressed review comments

Author: ehsjoar

asciidoc/components/metal3.adoc

@@ -19,16 +19,28 @@ management capabilities for Kubernetes.
 Metal^3^ provides Kubernetes-native resources to manage the lifecycle of bare-metal servers
 which support management via out-of-band protocols such as https://www.dmtf.org/standards/redfish[Redfish].
 
-It also has mature support for https://cluster-api.sigs.k8s.io/[Cluster API (CAPI)] which enables management
-of infrastructure resources across multiple infrastructure providers via broadly adopted vendor-neutral APIs.
+It also has mature support for https://cluster-api.sigs.k8s.io/[Cluster API (CAPI)]. 
+This enables management of hardware resources across multiple
+infrastructure providers via broadly adopted vendor-neutral APIs. 
+Cluster API uses Metal^3^ as an infrastructure backend for Machine objects.  
 
 == How does SUSE Edge use Metal^3^?
 
-This method is useful for scenarios where the target hardware supports out-of-band management, and a fully automated
-infrastructure management flow is desired.
+SUSE Edge uses Metal^3^ to manage the lifecycle of physical hardware, such as
+servers. The hardware needs to support an out-of-band management protocol that
+is supported by Metal^3^ (e.g. Redfish). When a SUSE Edge management cluster
+provisions or deprovisions downstream clusters, Metal^3^ will interact with a
+server's BMC via Redfish. The following actions are typically part of this
+interaction: +
 
-This method provides declarative APIs that enable inventory and state management of bare-metal servers, including
-automated inspection, cleaning and provisioning/deprovisioning.
+* Mount and umount Virtual Media.
+* Power on, power off, and reset servers.
+
+This approach is useful for scenarios where the target hardware supports out-of-band management, and a fully automated infrastructure management flow is desired.
+
+Metal^3^ and CAPI provide declarative APIs that enable inventory and state
+management of bare-metal servers, including automated inspection, cleaning, and
+provisioning/deprovisioning.
 
 == Known issues