Better explanation of "false" vocabularies

Author: handrews

versions/3.1.1.md

@@ -2583,8 +2583,8 @@ The following properties are taken from the JSON Schema specification but their
 
 In addition to the JSON Schema properties comprising the OAS dialect, the Schema Object supports keywords from any other vocabularies, or entirely arbitrary properties.
 
-Validators MAY choose to ignore keywords defined by the OpenAPI Specification's base vocabulary, due to its inclusion in the OAS dialect with a [`$vocabulary`](https://datatracker.ietf.org/doc/html/draft-bhutton-json-schema-00#section-8.1.2) value of `false`.
-It is comprised of the following keywords:
+JSON Schema implementations MAY choose to treat keywords defined by the OpenAPI Specification's base vocabulary as [unknown keywords](https://datatracker.ietf.org/doc/html/draft-bhutton-json-schema-00#section-4.3.1), due to its inclusion in the OAS dialect with a [`$vocabulary`](https://datatracker.ietf.org/doc/html/draft-bhutton-json-schema-00#section-8.1.2) value of `false`.
+The OAS base vocabulary is comprised of the following keywords:
 
 ##### <a name="baseVocabulary"></a>Fixed Fields