blog: Add keyboard visual to the LW12 hackathon article (#29237)

* Add keyboard visual to the LW12 hackathon article

* run formatter

apps/www/_blog/2024-08-26-supabase-lw12-hackathon.mdx

@@ -39,14 +39,16 @@ This is the perfect excuse to "Build in a weekend, scale to billions.” Since y
 
 There are 5 categories there will be prizes for:
 
-- Best overall project (Swag kit)
-- Best use of AI (Swag kit)
-- Most fun / best easter egg (Swag kit)
-- Most technically impressive (Swag kit)
-- Most visually pleasing (Swag kit)
+- Best overall project
+- Best use of AI
+- Most fun / best easter egg
+- Most technically impressive
+- Most visually pleasing
 
 There will be a winner and a runner-up prize for each category. Every team member on winning/runner-up teams gets a Supabase Launch Week swag kit.
 
+![Keyboard](/images/blog/lw12/hackathon/keyboard.png)
+
 ## Submission
 
 You should submit your project using [this form](https://hackathon.dev/lw12) before 11:59 pm Sunday midnight PT, September 22nd, 2024.