Fix propertyDependencies, not dependentProperties

Author: jdesrosiers

jsonschema-core.xml

@@ -2262,7 +2262,7 @@
                             Omitting this keyword has the same behavior as an empty object.
                         </t>
                     </section>
-                    <section title="dependentProperties">
+                    <section title="propertyDependencies">
                         <t>
                             This keyword specifies subschemas that are evaluated if the instance is
                             an object and contains a certain property with a certain string value.