add gitea repo for Internal documentation

otc_metadata/data/documents/sd-umn.yaml

@@ -0,0 +1,9 @@
+---
+hc_location: usermanual/sd
+html_location: docs/sd/umn
+link: /status-dashboard/umn/
+pdf_name: sd-umn
+rst_location: umn/source
+service_type: sd
+title: User Guide
+type: umn

otc_metadata/data/services/sd.yaml

@@ -1,5 +1,5 @@
 ---
-environment: public
+environment: hidden
 repositories:
 - environment: internal
   repo: docs/status-dashboard