docs: update synchronized_grid_map_fusion

Signed-off-by: badai-nguyen <[email protected]>

perception/probabilistic_occupancy_grid_map/synchronized_grid_map_fusion.md

@@ -97,7 +97,7 @@ You need to generate OGMs in each sensor frame before achieving grid map fusion.
 
 ```xml
 <include file="$(find-pkg-share tier4_perception_launch)/launch/occupancy_grid_map/probabilistic_occupancy_grid_map.launch.xml">
-    <arg name="input/obstacle_pointcloud" value="/perception/obstacle_segmentation/single_frame/pointcloud_raw"/>
+    <arg name="input/obstacle_pointcloud" value="/perception/obstacle_segmentation/single_frame/pointcloud"/>
     <arg name="input/raw_pointcloud" value="/sensing/lidar/right/outlier_filtered/pointcloud_synchronized"/>
     <arg name="output" value="/perception/occupancy_grid_map/right_lidar/map"/>
     <arg name="map_frame" value="base_link"/>