fix: typo in example prompt

packages/bolt/app/components/chat/BaseChat.tsx

@@ -29,7 +29,7 @@ const EXAMPLE_PROMPTS = [
   { text: 'Build a simple blog using Astro' },
   { text: 'Create a cookie consent form using Material UI' },
   { text: 'Make a space invaders game' },
-  { text: 'How do I can center a div?' },
+  { text: 'How do I center a div?' },
 ];
 
 const TEXTAREA_MIN_HEIGHT = 72;