Update to 10.4 "Output Structure"

Per the following issue: #824

Author: bwicklund

jsonschema-core.xml

@@ -2636,13 +2636,13 @@ https://example.com/schemas/common#/$defs/count/minimum
                     Specifically, the errors it will produce are:
                     <list>
                         <t>
-                            The second element in the "vertices" property is missing a "y" property.
+                            The second "point" object is missing a "y" property.
                         </t>
                         <t>
-                            The second element in the "vertices" property has a disallowed "z" property.
+                            The second "point" object has a disallowed "z" property.
                         </t>
                         <t>
-                            There are only two vertices, but three are required.
+                            There are only two "point", but three are required.
                         </t>
                     </list>
                     Note that the error message wording as depicted in these examples is not a