fix validation spec link to format registry file

Author: gregsdennis

specs/jsonschema-validation.md

@@ -344,7 +344,7 @@ instance.
 
 #### Format Registry {#format-registry}
 
-In addition to the formats defined by this document, JSON Schema also maintains a registry of formats defined by other specifications and organizations. As of the publication of this document, the format registry can be found at https://github.com/json-schema-org/json-schema-spec/blob/main/specs/format-registry.json.
+In addition to the formats defined by this document, JSON Schema also maintains a registry of formats defined by other specifications and organizations. As of the publication of this document, the format registry can be found at <https://github.com/json-schema-org/json-schema-spec/blob/main/specs/registries/format.json>.
 
 Implementations SHOULD support the formats listed in this registry as if they were defined by this document.