Edit configuration object: core.date_format.html_datetime

"""
uuid: 676f2d96-b290-41df-81b5-1229bb4354b1\n
langcode: en\n
status: true\n
dependencies: {  }\n
_core:\n
  default_config_hash: jxfClwZIRXIdcvMrE--WkcZxDGUVoOIE3Sm2NRZlFuE\n
id: html_datetime\n
label: 'HTML Datetime'\n
locked: true\n
pattern: 'Y-m-d\TH:i:sO'\n
"""