Update 'datacite.yml'

datacite.yml

@@ -34,6 +34,10 @@ keywords:
 license:
   name: 'Creative Commons CC0 1.0 Public Domain Dedication'
   url: 'https://creativecommons.org/publicdomain/zero/1.0/'
+  
+  reference:
+  IsSupplementTo - tba
+  
 funding:
   - 'DFG, 525183217'