Added aline for the template parameter of the show_menu tag.

Author: Chris Glass

docs/getting_started/navigation.rst

@@ -41,9 +41,11 @@ The third parameter, ``extra_inactive`` (default=0), specifies how many levels
 of navigation should be displayed if a node is not a direct ancestor or
 descendant of the current active node.
 
-Finally, the fourth parameter, ``extra_active`` (default=100), specifies how
+The fourth parameter, ``extra_active`` (default=100), specifies how
 many levels of descendants of the currently active node should be displayed.
 
+You can supply a ``template`` parameter to the tag.
+
 Some Examples
 =============