Replace .to<double>() and .template to<double>() with .value() (#3667)

It's a less verbose way to do the same thing.

wpilibcExamples/src/main/cpp/examples/ElevatorTrapezoidProfile/cpp/Robot.cpp

@@ -43,7 +43,7 @@ class Robot : public frc::TimedRobot {
 
     // Send setpoint to offboard controller PID
     m_motor.SetSetpoint(ExampleSmartMotorController::PIDMode::kPosition,
-                        m_setpoint.position.to<double>(),
+                        m_setpoint.position.value(),
                         m_feedforward.Calculate(m_setpoint.velocity) / 12_V);
   }