little change to tutorials/visualizing_in_rviz/hello_moveit.cpp : .hpp to .h , plan.trajectory to plan.trajectory_

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https://github.com/moveit/moveit2_tutorials/blob/main/doc/tutorials/visualizing_in_rviz/hello_moveit.cpp

1. line 1 : change "#include <moveit/move_group_interface/move_group_interface.hpp>" to
   "#include <moveit/move_group_interface/move_group_interface.h>"
   .hpp to .h

2. line73 "draw_trajectory_tool_path(plan.trajectory)" to "draw_trajectory_tool_path(plan.trajectory_)"

[sea-bass]

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