Fix misleading comment in Arduino comment

modified:   firmware/arduino_tectoh/arduino_tectoh.ino

firmware/arduino_tectoh/arduino_tectoh.ino

@@ -260,8 +260,8 @@ byte t_half_ustp; // time that a half microstep takes, from the previous vector
 const byte SLEW_VEL_T_H_USTP = 200; // microseconds lower than the speed will be continuos
 
 // array for the time of a half step (h_stp), it is only used when the time
-// a half microstep (h_ustp) is lower than 200. Otherwise, they would be out
-// of sync
+// a half microstep (h_ustp) is 200. i.e. for slow speeds.
+// Otherwise, they would be out of sync
 const float vec_t_h_stp[] = {0,529411.76,264705.88,176470.59,132352.94,105882.35,88235.29,75630.25,66176.47,58823.53,52941.18,48128.34,44117.65,40723.98,37815.13,35294.12,33088.24,31141.87,29411.76,27863.78,26470.59,25210.08,24064.17,23017.90,22058.82,21176.47,20361.99,19607.84,18907.56,18255.58,17647.06,17077.80,16544.12,16042.78,15570.93,15126.05,14705.88,14308.43,13931.89,13574.66,13235.29,12912.48,12605.04,12311.90,12032.09,11764.71,11508.95,11264.08,11029.41,10804.32,10588.24,10380.62,10181.00,9988.90,9803.92,9625.67,9453.78,9287.93,9127.79,8973.08,8823.53,8678.88,8538.90,8403.36,8272.06,8144.80,8021.39,7901.67,7785.47,7672.63,7563.03,7456.50,7352.94,7252.22,7154.21,7058.82,6965.94,6875.48,6787.33,6701.41,6617.65,6535.95,6456.24,6378.45,6302.52,6228.37,6155.95,6085.19,6016.04,5948.45,5882.35,5817.71,5754.48,5692.60,5632.04,5572.76,5514.71,5457.85,5402.16,5347.59,5294.12};