Fixed #11471: Fixed typo in a comment in admin options.py. Thanks adamv.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11446 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/options.py

@@ -482,7 +482,7 @@ def get_action_choices(self, request, default_choices=BLANK_CHOICE_DASH):
 
     def get_action(self, action):
         """
-        Return a given action from a parameter, which can either be a calable,
+        Return a given action from a parameter, which can either be a callable,
         or the name of a method on the ModelAdmin.  Return is a tuple of
         (callable, name, description).
         """