Add changelog item for renamed formats

Author: awwright

jsonschema-validation.xml

@@ -973,6 +973,7 @@
                             <t>Allow empty "required" and "dependencies" arrays</t>
                             <t>Fixed "type" reference to primitive types</t>
                             <t>Added "const" keyword</t>
+                            <t>Renamed the formats "uriref" to "uri-reference", "uritemplate" to "uri-template", and "jsonpointer" to "json-pointer"</t>
                         </list>
                     </t>
                     <t hangText="draft-wright-json-schema-validation-00">