added power supply alternative

shoppinglist_uk.md

@@ -2,7 +2,7 @@
 
 * RaspBerry Pi 3: https://www.amazon.co.uk/Raspberry-Pi-Model-64-Bit-Processor/dp/B07BDR5PDW
 * Micro SD-Card 16GB: https://www.amazon.co.uk/Kingston-SDC10G2-16GB-microSDHC-Included/dp/B0162YQEIE
-* Power: https://www.amazon.co.uk/iTrunk-Raspberry-Model-Supply-Charger/dp/B01MFFSPHE
+* Power: https://www.amazon.co.uk/iTrunk-Raspberry-Model-Supply-Charger/dp/B01MFFSPHE or https://www.amazon.co.uk/dp/B07MLZQXS7
 * 1TB Hard Drive: https://www.amazon.co.uk/Toshiba-Canvio-Basics-Portable-External/dp/B00KWHJY7Q
 * Case: https://www.amazon.co.uk/SB-Components-Transparent-Case-Raspberry/dp/B0173GQF8Y
 * LCD-Display: https://www.amazon.co.uk/ELEGOO-480x320-Raspberry-Monitor-Interface/dp/B01MRQTMTD