OSSM-2423: [DOC] must-gather tool needs to be specific about gather for specific namespace

Author: gwynnemonahan

modules/ossm-about-collecting-ossm-data.adoc

@@ -16,7 +16,7 @@ You can use the `oc adm must-gather` CLI command to collect information about yo
 
 * The {product-title} CLI (`oc`) installed.
 
-.Precedure
+.Procedure
 
 . To collect {SMProductName} data with `must-gather`, you must specify the {SMProductName} image.
 +
@@ -31,3 +31,12 @@ $ oc adm must-gather --image=registry.redhat.io/openshift-service-mesh/istio-mus
 ----
 $ oc adm must-gather --image=registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel8:2.4 gather <namespace>
 ----
++
+This creates a local directory that contains the following items: 
+
+* The Istio Operator namespace and its child objects
+* All control plane namespaces and their children objects
+* All namespaces and their children objects that belong to any service mesh
+* All Istio custom resource definitions (CRD)
+* All Istio CRD objectsm such as VirtualServices in a given namespace
+* All Istio webhooks