Edit configuration object: language.negotiation

"""
_core:\n
  default_config_hash: uEePITI9tV6WqzmsTb7MfPCi5yPWXSxAN1xeLcYFQbM\n
session:\n
  parameter: language\n
url:\n
  source: path_prefix\n
  prefixes:\n
    en: en\n
    de: de\n
  domains:\n
    en: ''\n
    de: ''\n
selected_langcode: site_default\n
"""