MISC fix link to dev website

Author: amueller

0.17/documentation.html

@@ -133,7 +133,7 @@ <h2><a href="user_guide.html">User Guide</a></h2>
         <!-- doc versions -->
             <h2>Other Versions</h2>
             <ul>
-                <li><a href="http://scikit-learn.org/stable/documentation.html">scikit-learn 0.18 (development)</a></li>
+                <li><a href="http://scikit-learn.org/dev/documentation.html">scikit-learn 0.18 (development)</a></li>
                 <li>scikit-learn 0.17 (stable)</li>
                 <li><a href="http://scikit-learn.org/0.17/documentation.html">scikit-learn 0.16</a></li>
                 <li><a href="http://scikit-learn.org/0.15/documentation.html">scikit-learn 0.15</a></li>
@@ -243,4 +243,4 @@ <h2><a href="related_projects.html">Related packages</a></h2>
             customSearchControl.draw('cse', options); }, true);
     </script>
   </body>
-</html>
+</html>