protect MarkDown table columns against empty attribute descriptions
protect MarkDown table columns against empty attribute descriptions

geometalab/osmaxx-frontend,geometalab/drf-utm-zone-info,geometalab/osmaxx-frontend,geometalab/osmaxx,geometalab/osmaxx,geometalab/osmaxx-frontend,geometalab/osmaxx,geometalab/osmaxx,geometalab/osmaxx-frontend,geometalab/drf-utm-zone-info