Fix link to TodoMVC

pkg/polymer/README.md

 Polymer.dart
 ============
 
 Polymer.dart is a set of comprehensive UI and utility components
 for building web applications.
 With Polymer.dart's custom elements, templating, data binding,
 and other features,
 you can quickly build structured, encapsulated, client-side web apps.
 
 Polymer.dart is a Dart port of
@@ skipping 95 matching lines @@
 We also have the [Web UI development list][devlist] for discussions about
 internals of the code, code reviews, etc.
 
 [wc]: http://dvcs.w3.org/hg/webcomponents/raw-file/tip/explainer/index.html
 [pub]: http://www.dartlang.org/docs/pub-package-manager/
 [cs]: http://www.chromium.org/developers/testing/webkit-layout-tests
 [cs_lucid]: http://gsdview.appspot.com/dartium-archive/continuous/drt-lucid64.zip
 [cs_mac]: http://gsdview.appspot.com/dartium-archive/continuous/drt-mac.zip
 [cs_win]: http://gsdview.appspot.com/dartium-archive/continuous/drt-win.zip
 [dartium_src]: http://code.google.com/p/dart/wiki/BuildingDartium
-[TodoMVC]: http://addyosmani.github.com/todomvc/
+[TodoMVC]: http://todomvc.com/
 [issues]: http://dartbug.com/new
 [mailinglist]: https://groups.google.com/a/dartlang.org/forum/?fromgroups#!forum/web-ui
 [devlist]: https://groups.google.com/a/dartlang.org/forum/?fromgroups#!forum/web-ui-dev
 [overview]: http://www.dartlang.org/articles/dart-web-components/
 [tools]: https://www.dartlang.org/articles/dart-web-components/tools.html
 [spec]: https://www.dartlang.org/articles/dart-web-components/spec.html
 [features]: https://www.dartlang.org/articles/dart-web-components/summary.html
 [home_page]: https://www.dartlang.org/polymer-dart/
 [polymer_expressions]: http://pub.dartlang.org/packages/polymer_expressions/
 [polymer]: http://www.polymer-project.org/