remove wiki link

railties/guides/source/getting_started.textile

@@ -1869,7 +1869,6 @@ free to consult these support resources:
 * The "Ruby on Rails Tutorial":http://railstutorial.org/book
 * The "Ruby on Rails mailing list":http://groups.google.com/group/rubyonrails-talk
 * The "#rubyonrails":irc://irc.freenode.net/#rubyonrails channel on irc.freenode.net
-* The "Rails Wiki":http://wiki.rubyonrails.org/
 
 Rails also comes with built-in help that you can generate using the rake command-line utility: