change log4r link to most recent, updated location

activerecord/README.rdoc

@@ -130,7 +130,7 @@ A short rundown of some of the major features:
   SQLite3[link:classes/ActiveRecord/ConnectionAdapters/SQLite3Adapter.html].
 
 
-* Logging support for Log4r[http://log4r.sourceforge.net] and Logger[http://www.ruby-doc.org/stdlib/libdoc/logger/rdoc].
+* Logging support for Log4r[http://log4r.rubyforge.org] and Logger[http://www.ruby-doc.org/stdlib/libdoc/logger/rdoc].
 
     ActiveRecord::Base.logger = ActiveSupport::Logger.new(STDOUT)
     ActiveRecord::Base.logger = Log4r::Logger.new('Application Log')