Fix dates

Author: jmct

events/2026-amerihac.markdown

@@ -1,7 +1,7 @@
 ---
 title: 2026 Haskell Foundation North American Hackathon (AmeriHac)
 published: 2025-09-13
-daterange: Feb 6, 2026
+daterange: Feb 7-8, 2026
 status: active
 location: New York, New York
 summary: Open Source Haskell hackathon