Update index.html

Author: sarthakdas

index.html

@@ -84,7 +84,7 @@ <h1 class="title is-1 publication-title">Ark: An Open-source Python-based Framew
 
             <!-- Tutorials -->
             <div class="column is-narrow has-text-centered">
-              <a href="tutorials/index.html"
+              <a href="https://arkrobotics.notion.site/ARK-Home-22be053d9c6f8096bcdbefd6276aba61"
                 class="external-link button is-normal is-rounded is-dark"
                 target="_blank" rel="noopener noreferrer">
                 <span class="icon">