[documentation] [Documentation task] Update throttle docs to 5.1 + merge comments

[catch]

Issue status update for 
http://drupal.org/node/123771
Post a follow up: 
http://drupal.org/project/comments/add/123771

 Project:      Documentation
 Version:      <none>
 Component:    Customization and Theming Guide
 Category:     tasks
 Priority:     normal
 Assigned to:  Anonymous
 Reported by:  catch
 Updated by:   catch
 Status:       active

http://drupal.org/handbook/modules/throttle


At the end it should read:


"
You can:



* enable throttle for modules at *administer >> site building >>
modules.*
* enable throttle for blocks at *administer >> site building >>
blocks.*
* configure throttle settings at *administer >> site configuration >>
throttle.*



"
This change would also incorporate the comment below so that should be
deleted.




catch