fix: wrong variable in mautrix-meta config validation

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

roles/custom/matrix-bridge-mautrix-meta-messenger/tasks/validate_config.yml

@@ -8,7 +8,7 @@
   with_items:
     - {'name': 'matrix_mautrix_meta_messenger_metrics_proxying_hostname', when: "{{ matrix_mautrix_meta_messenger_metrics_proxying_enabled }}"}
     - {'name': 'matrix_mautrix_meta_messenger_metrics_proxying_path_prefix', when: "{{ matrix_mautrix_meta_messenger_metrics_proxying_enabled }}"}
-    - {'name': 'matrix_mautrix_meta_messenger_container_labels_bridgev2_traefik_hostname', when: "{{ matrix_mautrix_meta_messenger_metrics_proxying_enabled }}"}
+    - {'name': 'matrix_mautrix_meta_messenger_container_labels_bridgev2_traefik_hostname', when: "{{ matrix_mautrix_meta_messenger_container_labels_bridgev2_enabled }}"}
     - {'name': 'matrix_mautrix_meta_messenger_appservice_token', when: true}
     - {'name': 'matrix_mautrix_meta_messenger_homeserver_token', when: true}
     - {'name': 'matrix_mautrix_meta_messenger_container_network', when: true}