Update booktitle to use ordinal format (#6617)

Author: kjp-souza

data/xml/2024.luhme.xml

@@ -2,7 +2,7 @@
 <collection id="2024.luhme">
   <volume id="1" ingest-date="2025-01-09" type="proceedings">
     <meta>
-      <booktitle>Proceedings of the First LUHME Workshop</booktitle>
+      <booktitle>Proceedings of the 1st LUHME Workshop</booktitle>
       <editor><first>Rui</first><last>Sousa-Silva</last></editor>
       <editor><first>Henrique</first><last>Lopes Cardoso</last></editor>
       <editor><first>Maarit</first><last>Koponen</last></editor>