Fix container image in renovate annotation for schildichat-web

`matrix_client_schildichat_docker_image` was adjusted to use the
Github Container Registry in 171f5f84a2cd058f0c53780, but the Renovate marker was not adjusted.

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3485

roles/custom/matrix-client-schildichat/defaults/main.yml

@@ -5,7 +5,7 @@ matrix_client_schildichat_enabled: true
 
 matrix_client_schildichat_container_image_self_build: false
 
-# renovate: datasource=docker depName=registry.gitlab.com/etke.cc/schildichat-web
+# renovate: datasource=docker depName=ghcr.io/etkecc/schildichat-web
 matrix_client_schildichat_version: 1.11.36-sc.3
 matrix_client_schildichat_docker_image: "{{ matrix_client_schildichat_docker_image_name_prefix }}etkecc/schildichat-web:{{ matrix_client_schildichat_version }}"
 matrix_client_schildichat_docker_image_name_prefix: "{{ 'localhost/' if matrix_client_schildichat_container_image_self_build else 'ghcr.io/' }}"