docs(node_diagram): fix input topic name for obstacle_pointcloud_based_validator

[Shin-kyoto]

Description

• Fix the input topic name for obstacle_pointcloud_based_validator

• cf.

$ ros2 node info /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node
/perception/object_recognition/detection/obstacle_pointcloud_based_validator_node
  Subscribers:
    /clock: rosgraph_msgs/msg/Clock
    /parameter_events: rcl_interfaces/msg/ParameterEvent
    /perception/object_recognition/detection/centerpoint/roi_fusion/objects: autoware_auto_perception_msgs/msg/DetectedObjects
    /perception/object_recognition/detection/pointcloud_map_filtered/pointcloud: sensor_msgs/msg/PointCloud2
  Publishers:
    /parameter_events: rcl_interfaces/msg/ParameterEvent
    /perception/object_recognition/detection/centerpoint/validation/objects: autoware_auto_perception_msgs/msg/DetectedObjects
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/debug/neighbor_pointcloud: sensor_msgs/msg/PointCloud2
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/debug/pointcloud_within_polygon: sensor_msgs/msg/PointCloud2
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/debug/removed_objects: autoware_auto_perception_msgs/msg/DetectedObjects
    /rosout: rcl_interfaces/msg/Log
  Service Servers:
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/describe_parameters: rcl_interfaces/srv/DescribeParameters
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/get_parameter_types: rcl_interfaces/srv/GetParameterTypes
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/get_parameters: rcl_interfaces/srv/GetParameters
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/list_parameters: rcl_interfaces/srv/ListParameters
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/set_parameters: rcl_interfaces/srv/SetParameters
    /perception/object_recognition/detection/obstacle_pointcloud_based_validator_node/set_parameters_atomically: rcl_interfaces/srv/SetParametersAtomically
  Service Clients:

  Action Servers:

  Action Clients:

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[kminoda]

Thanks!!!