(DOCSP-26871) Update spec.externalConnectivity.port definition in the OM spec in the docs (#1159)

* (DOCSP-26871) Update spec.externalConnectivity.port definition in the OM spec

* Tech review from Mircea

* Second round tech review

* Final tech review

* Edits for clarity from John W

* One more missed edit

* added value

Author: JuliaMongo

source/reference/k8s-operator-om-specification.txt

@@ -698,24 +698,32 @@ Optional |onprem| Resource Settings
 
    *Type*: integer
 
-   If :opsmgrkube:`spec.externalConnectivity.type` is ``NodePort``, the
-   port on the |k8s| service from which external traffic is routed to
-   the |application|.
+   Value that indicates which port that a |k8s| service exposes the
+   |application| should use for external traffic.
 
-   .. note::
 
-      You must configure your network's firewall to allow traffic over
-      this port.
+   - If :opsmgrkube:`spec.externalConnectivity.type` is ``NodePort``:
+   
+     - The |k8s| service exposes the |application| to external traffic
+       through this port.
+
+     - If you don't provide a :opsmgrkube:`spec.externalConnectivity.port`
+       value, the |k8s| service routes traffic to the |application| from an
+       available port selected randomly from the following default range: ``30000``-``32767``.
+
+       .. note::
+
+          You must configure your network's firewall to allow traffic over
+          this port.
+
+   - If :opsmgrkube:`spec.externalConnectivity.type` is ``LoadBalancer``:
 
-   If :opsmgrkube:`spec.externalConnectivity.type` is ``LoadBalancer``,
-   the load balancer resource that your cloud provider creates routes
-   traffic to this port on the |k8s| service. You don't need to provide
-   this value. |k8s| uses an open port within the default range and
-   handles internal traffic routing appropriately.
+     - The load balancer resource that your cloud provider creates exposes
+       the |application| through this port.
 
-   In both cases, if this value is not provided, the |k8s| service
-   routes traffic from an available port within the following default
-   range to the |application|: ``30000``-``32767``.
+     - If you don't provide a :opsmgrkube:`spec.externalConnectivity.port`
+       value, the |k8s| service exposes the |application| to external
+       traffic through the default HTTP (8080) or HTTPS (8443) port.
 
 .. opsmgrkube:: spec.externalConnectivity.loadBalancerIP