RecsItemClick example doesn't match the example in the documentation.

The documentation [here](https://developer.adobe.com/commerce/services/shared-services/storefront-events/sdk/publish/#msepublishrecsitemclick) displays this as the correct approach.

The example given in this repo is mse.publish.recsItemClick({unitId}).


Compare the repository's RecsItemClick example with the linked Adobe Commerce documentation and the example shown in the issue. Update the repository example so it matches the documented approach, then verify that the displayed usage is consistent with the external documentation.

Written by the indexing model from the issue text.