Fix graphana docker image path

Closes-Bug: PROD-24861 (PROD:24861)

Change-Id: I2e28dda85048bb99e7c33a9a290b033d340552cd
diff --git a/init.yml b/init.yml
index 015572a..984804d 100644
--- a/init.yml
+++ b/init.yml
@@ -222,8 +222,8 @@
           - registry: ${_param:mcp_docker_registry}/openstack-docker
             target_registry: ${docker:client:registry:target_registry}/openstack-docker
             name: prometheus_relay:${_param:apt_mk_version}
-          - registry: ${_param:mcp_docker_registry}/mirantis/external
-            target_registry: ${docker:client:registry:target_registry}/mirantis/external
+          - registry: ${_param:mcp_docker_registry}/openstack-docker/grafana
+            target_registry: ${docker:client:registry:target_registry}/openstack-docker/grafana
             name: grafana:${_param:apt_mk_version}
           - registry: ${_param:mcp_docker_registry}/openstack-docker
             target_registry: ${docker:client:registry:target_registry}/openstack-docker