Merge pull request #1146 from CartoDB/926-cartocss-doc-link

Fixed cartocss documentation link

lib/assets/javascripts/cartodb/table/views/cartocss_doc.jst.ejs

@@ -1,4 +1,4 @@
 <p>If you know how to use CSS to style websites, you already know how to use Carto to style your maps. The Carto language is an easy, flexible, and powerful way to making a better looking map.</p>
 <nav>
-  <a class="alone" href="http://mapbox.com/carto/api/2.1.0/" target="_blank">Take a look at the carto reference</a>
+  <a class="alone" href="https://github.com/mapbox/carto/blob/master/docs/latest.md" target="_blank">Take a look at the carto reference</a>
 </nav>