Update content/built-in-examples/04.communication/MultiSerialMega/MultiSerialMega.md

Co-authored-by: Karl Söderby <35461661+karlsoderby@users.noreply.github.com>

Author: BenjaminDannegard

content/built-in-examples/04.communication/MultiSerialMega/MultiSerialMega.md

@@ -13,7 +13,7 @@ Sometimes, one serial port just isn't enough! When trying to communicate with mu
 
 ### Hardware Required
 
-- [Arduino Mega Board](https://store.arduino.cc/en-se/collections/boards-modules?filter.p.m.hardware_func.form_factor=Mega)
+- [Arduino Mega Board](https://store.arduino.cc/products/arduino-mega-2560-rev3)
 
 - Serial enabled device  (a Xbee Radio, a Bluetooth® module, or RFID reader, or another board, for instance).