Currently, in order to access the markdown list of incompatible workspaces on the main branch, it is required to navigate to the latest run of the Check Backstage Compatibility workflow.
At the end of this workflow, we should update a given Wiki page with the markdown, so that it can be accessed directly from the Readme badge.

This would require saving the markdown content as a workflow artifact in the reusable workflow (in the rhdh-plugin-export-utils repo), and reuse it to update the wiki page in the calling workflow (in rhdh-plugin-export-overlays).