Fix broken URL for aws roadmap

src/pages/get-started.astro

@@ -260,7 +260,7 @@ import { TipItem } from '../components/GetStarted/TipItem';
     <RoadmapCard
       icon={Cloud}
       title='AWS'
-      link='/AWS'
+      link='/aws'
       description='Learn all you need to know to become an AWS Engineer.'
     />