update visa letter request (#1716)

Author: dimaMachina

src/app/conf/2024/faq/faq.mdx

@@ -323,8 +323,8 @@ Refunds will only be issued for cancellations received two weeks prior to the ev
 
 If you are unable to attend, you may substitute another attendee in lieu of cancellation. To substitute an attendee, select the Transfer Registration button above. You will be required to provide the attendee's first name, last name, and email address for the registration.
 
-{<h3>Visa Letter Request</h3>}
+## Visa Letter Request
 
-Question: I need a visa letter to attend this event. How do I request one?
+If you need a visa letter to attend the event, you must first be registered to attend GraphQLConf 2024.
 
-Answer: You must be registered to attend GraphQLConf 2024. **Please note:** it can take up to an hour for our registration system and visa letter system to sync. [Visa Letter Request](https://events.linuxfoundation.org/about/visa-request).
+**Please note:** it can take up to an hour for our registration system and visa letter system to sync. [Visa Letter Request](https://events.linuxfoundation.org/about/visa-request).