Update blog/_posts/2025-03-06-scala-days-2025-cfp.md

Co-authored-by: Seth Tisue <[email protected]>

Author: adpi2

blog/_posts/2025-03-06-scala-days-2025-cfp.md

@@ -1,6 +1,6 @@
 ---
 layout: blog-detail
-post-type: blog
+category: blog
 by: The Scala Center
 title: "Scala Days 2025: Call for proposals"
 ---