node-db: disable replication explicitly

Fixes format of the healthcheck script.

Signed-off-by: Jakub Sokołowski <jakub@status.im>

ansible/group_vars/node-db.yml

@@ -4,6 +4,7 @@ postgres_ha_service_name: 'nim-waku-db'
 postgres_ha_cont_image: 'postgres:15.1-alpine'
 
 postgres_ha_is_master: true
+postgres_ha_replica_enabled: false
 postgres_ha_replica_allowed_addresses: []
 
 postgres_ha_admin_user: 'postgres'