Backport of docs: clarify namespace support in autoscaler (#26342)

Co-authored-by: Tim Gross <[email protected]>

Author: hc-github-team-nomad-core

website/content/tools/autoscaling/agent.mdx

@@ -13,13 +13,12 @@ multiple configuration files or directories to configure the agent.
 
 ## Nomad Namespaces
 
-The Nomad Autoscaler currently has limited support for
-[Nomad Namespaces][nomad_namespaces]. The `nomad` configuration below supports
-specifying a namespace; if configured with a namespace, the Autoscaler will
-retrieve scaling policies and perform autoscaling only for jobs in that
-namespace. If the special wildcard namespace value `*` is used, the Autoscaler
-agent will retrieve scaling policies from all namespaces. A future version will
-include support for multiple namespaces.
+You can configure Nomad Autoscaler to use a [Nomad namespace][nomad_namespaces]
+using the agent's [`nomad`][autoscaler_agent_nomad] configuration block. The
+Autoscaler retrieves scaling policies and perform autoscaling only for jobs in
+that namespace. If you use the special wildcard namespace value `*`, the
+Autoscaler agent retrieves scaling policies from all namespaces. A future
+version will include support for multiple namespaces.
 
 ## Nomad ACLs