message: docs(card-group): adding stable-selectors table
  ### Description
  Adding stable-selectors table
  ### Changelog
  **New**
  Stable selectors table;
diff: @@ -57,4 +57,13 @@ import '@carbon/ibmdotcom-web-components/es/components/card/card-footer.js';
  <Props of="dds-card-group-item" />
  +## Stable selectors
  +
  +See [our README](https://github.com/carbon-design-system/carbon-for-ibm-dotcom/tree/master/packages/web-components#stable-selectors-for-analytics-and-integratione2e-testing-in-web-components) to see how Web Components selector and `data-autoid` should be used.
  +
  +| Web Components selector | Compatibility selector | Description |
  +| ----------------------- | -------------------------------------- | ----------- |
  +| `<dds-card-group>` | `data-autoid="dds--card-group"` | Component |
  +| `<dds-card-group-item>` | `data-autoid="dds--card-group-item"` | Component |
  +
  <Description markdown={contributing} />
  