website doesn't display docs for old versions any more

docs/README.md

@@ -1,11 +1,11 @@
 Please make sure that you use the documents that match your Electron version.
 The version number should be a part of the page URL. If it's not, you are
 probably using the documentation of a development branch which may contain API
-changes that are not compatible with your Electron version. If that's the case,
-you can switch to a different version of the documentation at the
-[available versions](http://electron.atom.io/docs/) list on atom.io, or if
-you're using the GitHub interface, open the "Switch branches/tags" dropdown and
-select the tag that matches your version.
+changes that are not compatible with your Electron version. To view older
+versions of the documentation, you can
+[browse by tag](https://github.com/electron/electron/tree/v1.4.0)
+on GitHub by opening the "Switch branches/tags" dropdown and selecting the tag
+that matches your version.
 
 ## FAQ