Be more accurate

We shouldn't let the user believe that they can "configure" Firefox to be the
Tor Browser.

wiki/src/doc/about/features.mdwn

@@ -18,7 +18,7 @@ Networking
 * [NetworkManager](http://projects.gnome.org/NetworkManager/) for easy
   network configuration
 * [Tor Browser](https://www.torproject.org/projects/torbrowser.html.en), a web
-  browser based on [Mozilla Firefox](http://getfirefox.com) and configured to protect your anonymity with:
+  browser based on [Mozilla Firefox](http://getfirefox.com) and modified to protect your anonymity with:
   - [Torbutton](https://www.torproject.org/torbutton) for anonymity
     and protection against evil JavaScript
   - all cookies are treated as session cookies by default;