Chnage parameter name and add extra explanation

Signed-off-by: Cihat Kurtuluş Altıparmak <[email protected]>

configuration/packages/costmap-plugins/static.rst

@@ -29,16 +29,18 @@ This implements a costmap layer taking in a map from either SLAM or ``map_server
   Description
     Clear any occupied cells under robot footprint.
 
-:``<static layer>``.restore_outdated_map:
+:``<static layer>``.restore_cleared_footprint:
 
   ==== =======
   Type Default                                                   
   ---- -------
-  bool False            
+  bool True            
   ==== =======
 
   Description
-    Restore map after clearing the area the footprint occupied.
+    Restore map after clearing the area the footprint occupied. 
+
+  If ``footprint_clearing_enabled`` is false, this parameter is ignored.
 
 :``<static layer>``.subscribe_to_updates: