adding blueprints to otc metadata

Reviewed-by: tischrei <tino.schreiber@t-systems.com>
Co-authored-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-committed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>

otc_metadata/data/services/blueprints.yaml

@@ -1,8 +1,11 @@
 ---
 environment: hidden
 repositories:
+- environment: internal
+  repo: docs/blueprints
+  type: gitea
 - environment: public
-  repo: opentelekomcloud-blueprints/docs
+  repo: opentelekomcloud-docs/blueprints
   type: github
 service_category: other
 service_title: Blueprints