Usage can't show paths for workflow/action files

[glungley]

For reusable workflows or custom actions which aren't at the root of the repository, the usage should include the path to the workflow/action yaml file. E.g.

jobs:
  call-workflow-passing-data:
    uses: octo-org/example-repo/.github/workflows/reusable-workflow.yml@main
    with:
      ...