Update gw manager docs

Updating gateway manager doc page since Plus and Enterprise users can create multiple control planes. This was new as part of KOD1 for API Summit.

app/konnect/gateway-manager/index.md

@@ -59,8 +59,9 @@ entity-specific permissions. For more information, see [Administer teams](/konne
 Every region in every organization starts with one default control plane.
 This control plane can't be deleted, and its status as the default can't be changed.
 
-With an [Enterprise subscription](https://konghq.com/pricing/), you can configure additional
-custom control panes. Use multiple control planes in one {{site.konnect_short_name}} organization to
+With {{site.konnect_short_name}} you can configure additional {{site.base_gateway}}
+control panes, each of which will have isolated configuration.
+Use multiple control planes in one {{site.konnect_short_name}} organization to
 manage data plane nodes and their configuration in any groupings you want.
 
 Some common use cases for using multiple control planes include:
@@ -165,4 +166,4 @@ You can extend {{site.konnect_short_name}} by using plugins. Kong provides a set
 
 Custom plugins can also be developed by the Kong Community and are supported and maintained by the plugin creators. If they are published on the Kong Plugin Hub, they are called Community or Third-Party plugins.
 
-See the [{{site.konnect_short_name}} plugin ordering documentation](/konnect/reference/plugins/) for more information.
+See the [{{site.konnect_short_name}} plugin ordering documentation](/konnect/reference/plugins/) for more information.