Update instructions for Safari Technology Preview

Author: mrego

enable.html

@@ -81,7 +81,7 @@ <h3 class="media-heading"><a href="http://www.opera.com/">Opera</a></h3>
                         <img class="pull-left media-object" src="img/webkit.png" alt="WebKit logo">
                         <div class="media-body">
                             <h3 class="media-heading"><a href="https://webkit.org/downloads/">WebKit</a></h3>
-                            <p>Enabled by default in Safari Technology Preview and WebKit Nightly Builds.</p>
+                            <p>In Safari Technology Preview and WebKit Nightly Builds you can enable the experimenta feature called <strong>CSS Grid</strong> using the menu: <em>Develop > Expermiental Features > CSS Grid</em></p>
                         </div>
                     </div>
                 </div>