diff -u b/core/modules/language/templates/language-negotiation-configure-form.html.twig b/core/modules/language/templates/language-negotiation-configure-form.html.twig
--- b/core/modules/language/templates/language-negotiation-configure-form.html.twig
+++ b/core/modules/language/templates/language-negotiation-configure-form.html.twig
@@ -8,7 +8,8 @@
  *   contains the following:
  *   - type: The machine name for the negotiation type.
  *   - title: The language negotiation type name.
- *   - description: A description for how the language negotiation type operates.
+ *   - description: A description for how the language negotiation type
+ *     operates.
  *   - configurable: A radio element to toggle the table.
  *   - table: A draggable table for the language detection methods of this type.
  *   - children: Remaining form items for the group.