made TOC toggle faster to avoid clunky text flow around it

lib/scripts/behaviour.js

@@ -104,7 +104,7 @@ var dw_behaviour = {
                         .attr('id','toc__toggle')
                         .css('cursor','pointer')
                         .click(function(){
-                            $toc.slideToggle();
+                            $toc.slideToggle(200);
                             setClicky();
                         });
         $header.prepend($clicky);