Clarify AKS-related channels on K8s Slack (#7585)

* Clarify AKS-related channels on K8s Slack

Signed-off-by: Bridget Kromhout <[email protected]>

* Clarifying channel name while not overlapping user

Signed-off-by: Bridget Kromhout <[email protected]>

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Signed-off-by: Bridget Kromhout <[email protected]>

Author: bridgetkromhout

communication/slack-config/channels.yaml

@@ -5,9 +5,11 @@ channels:
   - name: africa-dev
   - name: airflow-operator
   - name: akri
-  - name: aks-engine-users
+  - name: azure-aks
+    id: CU3N85WJK
   - name: aks-engine-dev
     id: CU1CXUHN0
+    archived: true
   - name: announcements
   - name: antrea
   - name: api-priority-and-fairness