use main instead of commit tag

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

@@ -14,7 +14,7 @@ matrix_continuwuity_hostname: ''
 
 matrix_continuwuity_docker_image: "{{ matrix_continuwuity_docker_image_registry_prefix }}continuwuation/continuwuity:{{ matrix_continuwuity_docker_image_tag }}"
 # renovate: datasource=docker depName=forgejo.ellis.link/continuwuation/continuwuity
-matrix_continuwuity_docker_image_tag: pr-789-head
+matrix_continuwuity_docker_image_tag: main
 matrix_continuwuity_docker_image_force_pull: "{{ matrix_continuwuity_docker_image.endswith(':latest') }}"
 matrix_continuwuity_docker_image_registry_prefix: "{{ matrix_continuwuity_docker_image_registry_prefix_upstream }}"
 matrix_continuwuity_docker_image_registry_prefix_upstream: "{{ matrix_continuwuity_docker_image_registry_prefix_upstream_default }}"