Fix typo in meta-schema URI

Author: handrews

jsonschema-validation.xml

@@ -195,7 +195,7 @@
         <section title="Meta-Schema">
             <t>
                 The current URI for the JSON Schema Validation meta-schema is
-                <eref target="https://json-schema.org/draft/2019-08/schenma#"/>.
+                <eref target="http://json-schema.org/draft/2019-08/schema#"/>.
                 For schema author convenience, this meta-schema describes all vocabularies
                 defined in this specification and the JSON Schema Core specification.
                 Individual vocabulary and vocabulary meta-schema URIs are given for