docs: def get_db_uri(config, output_dir):
      """Process results_database parameters in config to format them for
      set database function
  
      :param dict config: project configuration dict
      :param str output_dir: output directory for results
      :return: string for db uri
      """
      db_config = config.get("results_database", {"db_uri": "default"})
      if db_config['db_uri'] == 'default':
          return os.path.join(output_dir, "results.sqlite")
      return db_config['db_uri']