Use new syntax from core

lib/open_project/xls_export/patches/api/v3/export_formats.rb

@@ -9,22 +9,24 @@ module OpenProject::XlsExport::Patches
     end
 
     def representation_format_xls
-      representation_format('xls',
-                            'application/vnd.ms-excel')
+      representation_format 'xls',
+                            mime_type: 'application/vnd.ms-excel'
     end
 
     def representation_format_xls_descriptions
-      representation_format('xls',
-                            'application/vnd.ms-excel',
-                            'xls_with_descriptions',
-                            'show_descriptions=true')
+      representation_format 'xls-with-descriptions',
+                            i18n_key: 'xls_with_descriptions',
+                            mime_type: 'application/vnd.ms-excel',
+                            format: 'xls',
+                            url_query_extras: 'show_descriptions=true'
     end
 
     def representation_format_xls_relations
-      representation_format('xls',
-                            'application/vnd.ms-excel',
-                            'xls_with_relations',
-                            'show_relations=true')
+      representation_format 'xls-with-relations',
+                            i18n_key: 'xls_with_relations',
+                            mime_type: 'application/vnd.ms-excel',
+                            format: 'xls',
+                            url_query_extras: 'show_relations=true'
     end
   end
 end