Fix docs (#172)

I actually forgot to push...

Author: einarmo

docfx_project/tutorials/toc.yml

@@ -20,6 +20,4 @@
 - name: Version Metrics
   href: version.md
 - name: Running as service
-  href: service.md
-- name: Simple OIDC
-  href: authentication.md
+  href: service.md