commerce_shipping-8.x-2.0-rc2/commerce_shipping.commerce_log_templates.yml

shipment_state_updated:
  category: commerce_order
  label: 'Shipment state updated'
  template: '<p><a href="{{ shipment_url }}">{{ shipment_label }}</a> moved from <em>{{ from_state }}</em> to <em>{{ to_state }}</em> by the <em>{{ transition_label }}</em> transition.</p>'