Add missing kind property in the workspace (#26362)

Author: ZhidaLiu

specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/stable/2023-10-01/machineLearningServices.json

@@ -2373,6 +2373,9 @@
           "$ref": "../../../../../common-types/resource-management/v3/managedidentity.json#/definitions/ManagedServiceIdentity",
           "description": "The identity of the resource."
         },
+        "kind": {
+          "type": "string"
+        },
         "location": {
           "description": "Specifies the location of the resource.",
           "type": "string"