Fix a typo in navigation server documentation

doc/classes/NavigationServer2D.xml

@@ -206,7 +206,7 @@
 		</method>
 		<method name="map_is_active" qualifiers="const">
 			<return type="bool" />
-			<param index="0" name="nap" type="RID" />
+			<param index="0" name="map" type="RID" />
 			<description>
 				Returns true if the map is active.
 			</description>

doc/classes/NavigationServer3D.xml

@@ -231,7 +231,7 @@
 		</method>
 		<method name="map_is_active" qualifiers="const">
 			<return type="bool" />
-			<param index="0" name="nap" type="RID" />
+			<param index="0" name="map" type="RID" />
 			<description>
 				Returns true if the map is active.
 			</description>

servers/navigation_server_2d.cpp

@@ -204,7 +204,7 @@ void NavigationServer2D::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("map_create"), &NavigationServer2D::map_create);
 	ClassDB::bind_method(D_METHOD("map_set_active", "map", "active"), &NavigationServer2D::map_set_active);
-	ClassDB::bind_method(D_METHOD("map_is_active", "nap"), &NavigationServer2D::map_is_active);
+	ClassDB::bind_method(D_METHOD("map_is_active", "map"), &NavigationServer2D::map_is_active);
 	ClassDB::bind_method(D_METHOD("map_set_cell_size", "map", "cell_size"), &NavigationServer2D::map_set_cell_size);
 	ClassDB::bind_method(D_METHOD("map_get_cell_size", "map"), &NavigationServer2D::map_get_cell_size);
 	ClassDB::bind_method(D_METHOD("map_set_edge_connection_margin", "map", "margin"), &NavigationServer2D::map_set_edge_connection_margin);

servers/navigation_server_3d.cpp

@@ -41,7 +41,7 @@ void NavigationServer3D::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("map_create"), &NavigationServer3D::map_create);
 	ClassDB::bind_method(D_METHOD("map_set_active", "map", "active"), &NavigationServer3D::map_set_active);
-	ClassDB::bind_method(D_METHOD("map_is_active", "nap"), &NavigationServer3D::map_is_active);
+	ClassDB::bind_method(D_METHOD("map_is_active", "map"), &NavigationServer3D::map_is_active);
 	ClassDB::bind_method(D_METHOD("map_set_up", "map", "up"), &NavigationServer3D::map_set_up);
 	ClassDB::bind_method(D_METHOD("map_get_up", "map"), &NavigationServer3D::map_get_up);
 	ClassDB::bind_method(D_METHOD("map_set_cell_size", "map", "cell_size"), &NavigationServer3D::map_set_cell_size);