BUGFIX: falscher Attribut-Wert

Author: StefanDumont

avhumboldt/Temminck.xml

@@ -8,7 +8,7 @@
             </titleStmt>
             <publicationStmt>
                 <publisher>Berlin-Brandenburgische Akademie der Wissenschaften</publisher>
-                <idno type="URL">https://correspsearch.net/storage/avhumboldt/Temminck.xml</idno>
+                <idno type="url">https://correspsearch.net/storage/avhumboldt/Temminck.xml</idno>
                 <availability>
                     <licence target="https://creativecommons.org/licenses/by/4.0/">Creative Commons CC-BY 4.0</licence>
                 </availability>