added announcement of applications closing soon at the very top of the RAIforUkraine page

Author: stoyanovich

_pages/RAIforUkraine.md

@@ -11,6 +11,11 @@ nav_order: 5
 
 <!-- <h4 class="category" id="collaboration">#RAIforUkraine: Responsible AI Research for Ukrainian Scholars</h4> -->
 
+**Applications for the RAIforUkraine Fall 2025 Cohort are closing soon! 
+Apply <a href="https://docs.google.com/forms/d/e/1FAIpQLSfNF6OcgsdWz5ZSsdzUJgQPjZ0gFnJEBJ-jlrgNxR57D-_CBw/viewform">here</a> if you are a Prospective mentor (deadline: August 20, 2025)
+and <a
+href="https://docs.google.com/forms/d/e/1FAIpQLSfz5Lj36d8V1kKFY8ZZLGzd_tAQi7k0ZBcrWujvLDyF4zi0mQ/viewform?pli=1">here</a> if you are a Prospective Research Fellow (deadline: August 25, 2025). More details below.**
+
 The ongoing war in Ukraine has severely disrupted the lives of
 hundreds of thousands of people, significantly impacting university
 students by displacing many and interrupting their education.  To