Removed extra parameter from example code.

docs/source/user_libs_austinman.rst

@@ -72,7 +72,7 @@ To insert a 2x2x2mm :math:`^3` AustinMan with the lower left corner 40mm from th
 
 .. code-block:: none
 
-    #geometry_objects_read: 0.04 0.04 0.04 ../user_libs/AustinManWoman/AustinMan_v2.3_2x2x2.h5 ../user_libs/AustinManWoman/AustinManWoman_materials_dispersive.txt n
+    #geometry_objects_read: 0.04 0.04 0.04 ../user_libs/AustinManWoman/AustinMan_v2.3_2x2x2.h5 ../user_libs/AustinManWoman/AustinManWoman_materials_dispersive.txt
 
 For further information on the ``#geometry_objects_read`` see the section on object contruction commands in the :ref:`Input commands section <commands>`.