Update README.md

README.md

@@ -6,7 +6,7 @@ Breadboard x1 <br>
 M2M Wires x3<br>
 M2F Wires x5<br>
 Arduino (https://store-usa.arduino.cc/products/a000066) x1 <br>
-Stepper Motor (https://www.adafruit.com/products/324) x1 <br>
+Stepper Motor (https://www.sparkfun.com/products/13656) x1 <br>
 RFID Reader(https://www.sparkfun.com/products/11828) x1<br>
 Motor Driver (https://www.sparkfun.com/products/12779) x1<br>
 Power Source (https://www.adafruit.com/product/798) x1