Rollout PDF to public

Reviewed-by: Tino Schreiber <tino.schreiber@t-systems.com>
Co-authored-by: Sebastian Gode <sebastian.gode@telekom.de>
Co-committed-by: Sebastian Gode <sebastian.gode@telekom.de>

otc_metadata/data/documents/sd-umn.yaml

@@ -3,7 +3,7 @@ hc_location: usermanual/sd
 html_location: docs/sd/umn
 link: /status-dashboard/umn/
 pdf_enabled: true
-pdf_environment: internal
+pdf_environment: public
 rst_location: umn/source
 service_type: sd
 title: User Guide