autoload_range doc fix (#2878)

To reflect #2823

Author: honnix

doc/configuration.rst

@@ -127,8 +127,8 @@ section and the parameters available within it.
 These parameters control core Luigi behavior, such as error e-mails and
 interactions between the worker and scheduler.
 
-autoload-range
-  .. versionadded:: 2.8.4
+autoload_range
+  .. versionadded:: 2.8.11
 
   If false, prevents range tasks from autoloading. They can still be loaded
   using ``--module luigi.tools.range``. Defaults to true. Setting this to true