Add missing H1 to / route for proper heading hierarchy and accessibility

Author: AshmitSherigar

src/layouts/HomepageLayout.astro

@@ -36,6 +36,9 @@ setJumpToState(null);
 />
 
 <BaseLayout title="" variant="homepage" homepageConfig={config}>
+    
+  <h1 class="text-5xl font-bold mb-xl col-span-full">Welcome to p5.js</h1>
+
   <div class="content-grid-simple mb-xl">
     <div
       class="col-span-2 lg:col-span-3 order-1 grid grid-cols-subgrid content-start"