Fixed dates shared task

Author: helemanc

_pages/mm-argfallacy2025.md

@@ -77,7 +77,7 @@ Metrics will be computed on the hidden test set to determine the best system for
 # Key Dates (Anywhere on Earth)
 
 - **Release of Training Data**: February 25th
-- **Release of Test Set**: Around March 24th
+- **Release of Test Set**: March 24th
 - **Evaluation Start**: April 14th
 - **Evaluation End**: April 25th
 - **Paper Submission Due**: May 15th