added metadata ---

content/2023/new-members-2023-EN.md

@@ -2,9 +2,9 @@
 Title: New Members
 Author: Varia
 Date: 2023-06-01
-Category: membership
-Tags: new members, membership, open call
-Slug: new-members
+category: membership
+tags: new members, membership, open call
+slug: new-members
 lang: en
 event_start: 2023-05-20
 event_duration: 1h

content/2023/new-members-2023-NL.md

@@ -2,9 +2,9 @@
 Title: New Members
 Author: Varia
 Date: 2023-06-01
-Category: membership
-Tags: new members, membership, open call
-Slug: new-members
+category: membership
+tags: new members, membership, open call
+slug: new-members
 lang: nl
 event_start: 2023-05-20
 event_duration: 1h