message: make getJointLimits static
diff: @@ -72,7 +72,7 @@ class TeleopJointPDExampleController : public controller_interface::MultiInterfa
  std::unique_ptr<franka_hw::FrankaStateHandle> state_handle;
  std::vector<hardware_interface::JointHandle> joint_handles;
  - // A virtual wall to avoint joint limits.
  + // A virtual wall to avoid joint limits.
  std::unique_ptr<VirtualJointPositionWalls<7>> virtual_joint_wall;
  Vector7d tau_target; // Target effort of each joint [Nm, Nm, Nm, Nm, Nm, Nm, Nm]
  @@ -164,7 +164,7 @@ class TeleopJointPDExampleController : public controller_interface::MultiInterfa
  return out;
  }
  - void getJointLimits(ros::NodeHandle& nh,
  + static void getJointLimits(ros::NodeHandle& nh,
  const std::vector<std::string>& joint_names,
  std::array<double, 7>& upper_joint_soft_limit,
  std::array<double, 7>& lower_joint_soft_limit);
  