{AFD} Fix az afd rule condition list example issue (#30934)

Co-authored-by: Jingnan Xu <jingnanxu@microsoft.com>

Author: Ptnan7

src/azure-cli/azure/cli/command_modules/cdn/aaz/latest/afd/rule/_list.py

@@ -18,7 +18,7 @@ class List(AAZCommand):
     """List all of the existing delivery rules within a rule set.
 
     :example: List all the routes within the specified endpoint.
-        az afd route list -g group --profile-name profile --endpoint-name endpoint1
+        az afd rule condition list -g group --rule-set-name ruleSetName --profile-name profile --name rule1
     """
 
     _aaz_info = {