im my angular 13.1.1 application i added storybook and manually adding angular cli build option to the project so that it will use angular build to build storybook be getting invalid option error

Below is the storybook config in angular.json

        "storybook": {
          "builder": "@storybook/angular:start-storybook",
          "options": {
            "browserTarget": "website:build",
            "styles": [".storybook/custom-styles.scss"]
          }
        },

The error I am getting after running ng storybook is as below

The specified command ("storybook") is invalid. For a list of available options