clarify what a keyword's annotation value is

Author: gregsdennis

specs/jsonschema-core.md

@@ -657,8 +657,8 @@ which are provided to applications to use as they see fit. JSON Schema
 implementations are not expected to make use of the collected information on
 behalf of applications.
 
-Unless otherwise specified, the value of an annotation keyword is the keyword's
-value. However, other behaviors are possible. For example, [JSON
+Unless otherwise specified, a keyword's annotation value is value of the
+keyword itself. However, other behaviors are possible. For example, [JSON
 Hyper-Schema's](https://datatracker.ietf.org/doc/html/draft-handrews-json-schema-hyperschema-02)
 `links` keyword is a complex annotation that produces a value based in part on
 the instance data.