Add TypeScript roadmap (#3391)

* Add typescript roadmap

* Add typescript content

* Add typescript roadmap

src/components/RoadmapHeader.astro

@@ -29,7 +29,7 @@ const isRoadmapReady = !isUpcoming;
   <div class='py-5 sm:py-12 container relative'>
     <YouTubeAlert />
 
-    <div class='mt-0 mb-3 sm:mb-6 sm:mt-4'>
+    <div class='mt-0 mb-3 sm:mb-4 sm:mt-4'>
       <h1 class='text-2xl sm:text-4xl mb-0.5 sm:mb-2 font-bold'>
         {title}
       </h1>