fix: link to reference from introduction page

Author: Alejandro Montes

web/docs/about.mdx

@@ -170,7 +170,7 @@ The documentation is divided into 2 sections.
     </div>
     {/* Ref */}
     <div class="col col--6">
-      <Link class="card" to="/docs/reference/javascript/supabase-client" style={{ height: '100%' }}>
+      <Link class="card" to="/docs/reference" style={{ height: '100%' }}>
         <div class="card__body">
           <h4>Reference Docs</h4>
           <p>Technical documentation for Client Libraries and Systems.</p>