add travel grant application closed note

Author: NinaWie

_pages/about.md

@@ -40,7 +40,6 @@ In the past years, the summer school was supported by [Universitätsgesellschaft
 
 - 2025/05/01: Registration opens
 - 2025/06/30: Deadline for travel grant applications
-- 2025/07/15: Registration deadline (if there is enough space, further registrations will be considered on a rolling basis)
 - 2025/09/01: Start of the summer school!
 
 ### Speakers

_pages/registration.md

@@ -40,8 +40,10 @@ The event is targeted mainly at Bachelor's and Master's students in cognitive sc
 
 ### Travel grants
 
+**UPDATE**: Application for travel grants is closed.
+
 We give out a limited number of travel grants. Everyone who does not live in Darmstadt is eligible; however, priority will be given to participants traveling from abroad. If you would like to apply, please register before June 30th and complete the corresponding section in the registration form. 
-We are still working on the details of the travel grant and will inform you once the exact conditions are finalized. We will almost certainly **not** be able to cover flights. In earlier iterations, we were able to offer 10 travel grants of €100 each and hope that it will be similar this year. If your attendance is contingent on receiving such a travel grant, and you’re unsure what to do, just sign up for now and let us know via mail.
+<!-- We are still working on the details of the travel grant and will inform you once the exact conditions are finalized. We will almost certainly **not** be able to cover flights. In earlier iterations, we were able to offer 10 travel grants of €100 each and hope that it will be similar this year. If your attendance is contingent on receiving such a travel grant, and you’re unsure what to do, just sign up for now and let us know via mail. -->
 
 
 ### Accommodation in Darmstadt