Fix Renovate depName for Continuwuity to use the actual Docker image name

The previous depName (forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/)
was a Forgejo web UI path, not the Docker image name. Renovate's docker datasource
needs the image name as used in `docker pull`.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

roles/custom/matrix-continuwuity/defaults/main.yml

@@ -12,7 +12,7 @@ matrix_continuwuity_enabled: true
 
 matrix_continuwuity_hostname: ''
 
-# renovate: datasource=docker depName=forgejo.ellis.link/continuwuation/-/packages/container/continuwuity/
+# renovate: datasource=docker depName=forgejo.ellis.link/continuwuation/continuwuity
 matrix_continuwuity_version: v0.5.5
 
 matrix_continuwuity_container_image: "{{ matrix_continuwuity_container_image_registry_prefix }}/continuwuation/continuwuity:{{ matrix_continuwuity_container_image_tag }}"