Update display name format in newsletter index

Author: pubino

_newsletters/13.17-Irene-11.14.25/index.md

@@ -3,7 +3,7 @@ layout: newsletter
 title: "Friday, Nov. 14, 2025"
 date: 2025-11-14
 permalink: /13.17-Irene-11.14.25/
-display_name: "13.17 Irene"
+display_name: "13.17 - Irene"
 ---
 
 17th