Remove unncessary scrollbars (ocaml#502)

Author: jawadcode

src/ocamlorg_frontend/pages/tutorial.eml

@@ -45,7 +45,7 @@ Learn_layout.render ~current_tutorial:tutorial.slug ~title:(Printf.sprintf "%s 
 </div>
 <div class="hidden lg:flex top-0 sticky h-screen">
   <div class="flex-col w-60">
-    <div class="h-screen overflow-scroll p-6 right-sidebar">
+    <div class="h-screen overflow-auto p-6 right-sidebar">
       <div class="font-semibold text-black text-sm mb-4">ON THIS PAGE</div>
       <div class="page-toc"><%s! tutorial.toc_html %></div>
     </div>