Next attempt to expand out the errors in a GH comment

Signed-off-by: Jesse Whitehouse <[email protected]>

Author: susodapop

.github/workflows/dco-check.yml

@@ -18,5 +18,5 @@ jobs:
               issue_number: context.issue.number,
               owner: context.repo.owner,
               repo: context.repo.repo,
-              body: ${{join(steps.run_tests.errors.*, '\n')}}
+              body: ${{ steps.run_tests.errors }}
             })