Add preconnect for ga and api

src/layouts/BaseLayout.astro

@@ -124,7 +124,9 @@ const gaPageIdentifier = Astro.url.pathname
     />
 
     <link rel='icon' href='/manifest/favicon.ico' type='image/x-icon' />
-    <link rel='dns-prefetch' href='https://api.roadmap.sh/' />
+
+    <link rel='preconnect' href='https://www.google-analytics.com/' />
+    <link rel='preconnect' href='https://api.roadmap.sh/' />
 
     <slot name='after-header' />
     {