Update NeuroFly_Toolkit.md

replace gel electrode shop link

website/docs/Software/OpenBCISoftware/NeuroFly_Toolkit.md

@@ -8,7 +8,7 @@ This tutorial will show you how to control a joystick using EMG data with the Op
 ## Materials Required
 
 1.  OpenBCI [Cyton Board](https://shop.openbci.com/collections/frontpage/products/cyton-biosensing-board-8-channel?variant=38958638542) or [Ganglion Board](https://shop.openbci.com/products/ganglion-board)
-2.  [Skintact sticky electrodes](https://shop.openbci.com/collections/frontpage/products/skintact-f301-pediatric-foam-solid-gel-electrodes-30-pack?variant=29467659395) or [IDUN Dryode](https://shop.openbci.com/collections/frontpage/products/idun-dryode-kit)
+2.  [Disposable gel electrodes](https://shop.openbci.com/products/kendall-emg-ecg-foam-solid-gel-electrodes-30-pack) or [IDUN Dryode](https://shop.openbci.com/collections/frontpage/products/idun-dryode-kit)
 3.  [EMG/ECG Snap Electrode Cables](https://shop.openbci.com/collections/frontpage/products/emg-ecg-snap-electrode-cables?variant=32372786958)
 4.  Computer with downloaded [OpenBCI GUI](Software/OpenBCISoftware/01-OpenBCI_GUI.md). **Be sure to use [OpenBCI GUI v5.2.0](https://github.com/OpenBCI/OpenBCI_GUI/releases/latest) or later**.