Add DCO signoff

Co-authored-by: Evgeny Malygin <[email protected]>
Signed-off-by: Patrick M. Niedzielski <[email protected]>

.github/workflows/documentation.yaml

@@ -49,5 +49,5 @@ jobs:
           cd docs/
           git config --global user.name "${{ github.actor }}"
           git config --global user.email "${{ github.actor }}@users.noreply.github.com"
-          git commit -am "Update C++ API docs from commit ${{ github.sha }} on main"
+          git commit -s -am "Update C++ API docs from commit ${{ github.sha }} on main"
           git push