TinaCMS content update

Author: tina-cloud-app[bot]

content/english/events/activities.md

@@ -97,6 +97,8 @@ events:
     image: /images/events/mathematics and computer science tu delft.png
     date: 07-03-2024
     facets:
+      - value: type_event
+        label: event
       - value: year_2024
         label: '2024'
         hide: true