Update service.json

Swagger correctness fix.

Author: pradheepm

specification/recoveryservicessiterecovery/resource-manager/Microsoft.RecoveryServices/stable/2023-01-01/service.json

@@ -24370,6 +24370,13 @@
             "type": "integer"
           },
           "readOnly": true
+        },
+        "excludedSkus": {
+          "description": "The SKUs to be excluded.",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
         }
       },
       "x-ms-discriminator-value": "VMwareCbt"