public EPS to Helpcenter (#78)

Reviewed-on: #78
Reviewed-by: Tino Schreiber <tino.schreiber@t-systems.com>
Co-authored-by: lbelejka <lukas.belejkanic@t-systems.com>
Co-committed-by: lbelejka <lukas.belejkanic@t-systems.com>

otc_metadata/data/documents/eps-api-ref.yaml

@@ -8,6 +8,6 @@ title: API Reference
 type: api-ref
 cloud_environments:
   - name: eu_de
-    visibility: internal
+    visibility: public
     pdf_visibility: public
     pdf_enabled: true