Fix metadata of latest posts by stb (#164)

Reviewed-on: #164
Reviewed-by: stb <stb@noreply.git.hamburg.ccc.de>

content/blog/2026/2026-05-08-diday-website/index.md

@@ -2,9 +2,7 @@
 categories: article
 title: 'DIDAY.org mit Unterstützung des CCCHH'
 date: '2026-06-07T14:00:00+02:00' # date of the event
-publishDate: '2026-06-07T14:00:00+02:00' # when to publish
 draft: false
-location: Z9
 authors:
   - stb
 tags:

content/blog/2026/2026-06-13-ueberwachungsfrei/index.md

@@ -1,5 +1,5 @@
 ---
-categories: article
+categories: event
 title: 'Demo-Aufruf: Überwachungsfrei in Hamburg'
 date: '2026-06-20T14:00:00+02:00'
 publishDate: '2026-06-13T12:00:00+02:00'