update command example

Author: cxznmhdcxz

src/azure-cli/azure/cli/command_modules/network/aaz/latest/network/application_gateway/waf_policy/managed_rule/exception/_add.py

@@ -18,7 +18,7 @@ class Add(AAZCommand):
     """Allows traffic that met configured criteria to skip the configured managed rules.
 
     :example: Add and exception rule to the WAF policy managed rules.
-        az network application-gateway waf-policy managed-rule exception add -g myResourceGroup --policy-name myWAF --match-variable "RequestURI" --value-operator Contains --values "health" "default.aspx" "account/images"
+        az network application-gateway waf-policy managed-rule exception add -g myResourceGroup --policy-name myWAF --match-variable "RequestURI" --value-operator Contains --values "health" "default.aspx" "account/images" --rule-sets [0].rule-set-type=OWASP [0].rule-set-version=3.2
     """
 
     _aaz_info = {