only in patch2:
unchanged:
--- a/core/modules/link/config/schema/link.schema.yml
+++ b/core/modules/link/config/schema/link.schema.yml
@@ -46,6 +46,9 @@ field.field_settings.link:
     title:
       type: integer
       label: 'Allow link text'
+    language:
+      type: integer
+      label: 'Allow link language'
     link_type:
       type: integer
       label: 'Allowed link type'