toolshed-8.x-1.x-dev/modules/toolshed_media/toolshed_media.links.menu.yml

toolshed_media.embed_styles_form:
  title: 'Toolshed Media Settings'
  parent: system.admin_config_media
  description: 'Manage how media images styles are managed.'
  route_name: toolshed_media.embed_styles_form