- added a line with nonvalidating without schemauri attribute

example_catalog/schema_catalog.xml

@@ -16,6 +16,6 @@
    <entry schematype="schema" namespace="http://www.w3.org/2005/Atom" schemauri="https://schemas.opengis.net/kml/2.3/atom-author-link.xsd"/>
    <entry schematype="schema" namespace="http://www.w3.org/XML/1998/namespace" schemauri="mods-3.8/flatten/xml.xsd"/>
    <entry schematype="schema" namespace="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0" schemauri="kml-2.3.0/xAL.xsd"/>
-   <entry schematype="nonvalidating" namespace="http://slub-dresden.de/" schemauri="nothing"/>
+   <entry schematype="nonvalidating" namespace="http://slub-dresden.de/" />
    <entry schematype="nonvalidating" namespace="http://slub-dresden.de/slubarchiv" schemauri="nothing"/>
 </slubschemacatalog>