blog: Add the link to the submission form (supabase#37480)

* Add the link to the submission form

* run formatter

Author: dshukertjr

apps/www/_blog/2025-07-18-lw15-hackathon.mdx

@@ -49,7 +49,7 @@ There will be a winner and a runner-up prize for each category. Every team membe
 
 ## Submission
 
-You should submit your project from the submission form before 11:59 pm Sunday midnight PT, July 27th, 2025. The submission form will be put up here on this article before the deadline. Come back in about a week to find it!
+You should submit your project from the [submission form](https://docs.google.com/forms/d/e/1FAIpQLSdWEAPmLpE3SjfOlR388eY3i901VEFTqsEr9eFJyZVGG47pQQ/viewform?usp=header) before 11:59 pm Sunday midnight PT, July 27th, 2025.
 
 ## Judges