MINOR: Updating the configuration module with the default database option and corrected a out of date link

docs/en/topics/configuration.md

@@ -8,7 +8,7 @@ itself.
 
 This lack of a configuration-GUI is on purpose, as we'd like to keep developer-level options where they belong (into
 code), without cluttering up the interface. See this core forum discussion ["The role of the
-CMS"](http://www.silverstripe.com/core-team-discussion/flat/2723) for further reasoning.
+CMS"](http://www.silverstripe.org/archive/show/532) for further reasoning.
 
 In addition to these principle, some settings are 
  * Author-level configuration like interface language or date/time formats can be performed in the CMS "My Profile" section (`admin/myprofile`). 
@@ -39,6 +39,7 @@ incomplete - please add to it** *Try to keep it in alphabetical order too! :)*
  | BlogEntry::allow_wysiwyg_editing();  |                               | Enable rich text editing for blog posts.  |                                                                                  
  | ContentNegotiator::set_encoding(string $encoding)  |					| The encoding charset to use - UTF-8 by default  |        
  | ContentNegotiator::disable()  |										| Disables the negotiation of content type -usually used to stop it from rewriting the DOCTYPE of the document                                                         
+ | DataObject::$create_table_options['MySQLDatabase] = 'ENGINE=MyISAM';|| Set the default database engine to MyISAM. |        
  | Debug::send_errors_to(string $email) |								| Send live errors on your site to this address (site has to be in 'live' mode using Director::set_environment_type(live) for this to occur |        
  | Director::set_environment_type(string dev,test,live) | 				| Sets the environment type (e.g. dev site will show errors, live site hides them and displays a 500 error instead) | 
  | Director::set_dev_servers(array('localhost', 'dev.mysite.com)) |     | Set servers that should be run in dev mode (see [debugging](debugging)) |