fix token link (#2493)

Author: mayagao

docs/_layouts/docs.html

@@ -26,7 +26,7 @@ <h1 class='space-bottom2'>
     <h2 class='space'>Using Mapbox GL JS with a <code>&lt;script&gt;</code> tag</h2>
 
     <div class='prose space-bottom2'>
-      <p>To use the <a href='https://www.mapbox.com/maps/'>vector tiles</a> and styles hosted on <a href='http://mapbox.com'>Mapbox</a>, you must <a href='https://www.mapbox.com/studio/signup/'>create an account</a> and <a href='obtain an access token'>https://www.mapbox.com/studio/account/tokens/</a>. You can learn more about access tokens <a href='https://www.mapbox.com/help/define-access-token/'>here</a>.
+      <p>To use the <a href='https://www.mapbox.com/maps/'>vector tiles</a> and styles hosted on <a href='http://mapbox.com'>Mapbox</a>, you must <a href='https://www.mapbox.com/studio/signup/'>create an account</a> and <a href='https://www.mapbox.com/studio/account/tokens/'>obtain an access token</a>. You can learn more about access tokens <a href='https://www.mapbox.com/help/define-access-token/'>here</a>.
 
       <pre>
 &lt;!DOCTYPE html&gt;