replace closed heading with buttons so the links in the grant types section don't have to change

Author: hypha

src/content/pages/finaid.mdx

@@ -129,7 +129,9 @@ reapply for round 2. Your application will automatically be considered for round
 ### 🆕 **Free Remote Ticket:**
 - You will receive an individual voucher code that you can use to claim a free remote conference ticket.
 Apply [here](https://forms.gle/9QuXwZTSxGYVRiMT8)
-### [Closed] Free Ticket Voucher Grant
+
+### Free Ticket Voucher Grant
+<Button disabled>Application closed</Button>
 
 - You will receive an **individual voucher code** for a free **standard
   Conference Ticket**, which grants you access to the three main conference days (Wednesday to Friday) as well as the sprints (Saturday and Sunday).
@@ -139,7 +141,8 @@ Apply [here](https://forms.gle/9QuXwZTSxGYVRiMT8)
 <Note>If your Free Ticket Voucher Grant was approved, you’ll receive your voucher code by email shortly—no further action needed!</Note>
 
 
-### [Closed] Travel/Accommodation Grant & Visa Application Fee Grant
+### Travel/Accommodation Grant & Visa Application Fee Grant
+<Button disabled>Application closed</Button>
 
 If you received a travel/accommodation grant or a visa application fee grant,
 you will be reimbursed **after the conference** via PayPal or bank transfer