Fix link to "Arduino Nano 33 IoT" product

Author: thePanz

README.md

@@ -617,7 +617,7 @@ Crates tailored for specific boards.
 - [`arduino_mkr1000`](https://crates.io/crates/arduino_mkr1000) - Board support for the [MKR 1000 WiFi board](https://docs.arduino.cc/hardware/mkr-1000-wifi) in the [atsamd-rs] repo. It is an [atsamd-rs tier 2 support] board. ![crates.io](https://img.shields.io/crates/v/arduino_mkr1000.svg)
 - [`arduino_mkrvidor4000`](https://crates.io/crates/arduino_mkrvidor4000) - Board support for the [MKR Vidor board](https://store.arduino.cc/usa/mkr-vidor-4000) in the [atsamd-rs] repo. It is an [atsamd-rs tier 2 support] board. ![crates.io](https://img.shields.io/crates/v/arduino_mkrvidor4000.svg)
 - [`arduino_mkrzero`](https://crates.io/crates/arduino_mkrzero) - Board support for the [mkrzero board](https://store.arduino.cc/arduino-mkrzero) in the [atsamd-rs] repo. It is an [atsamd-rs tier 2 support] board. ![crates.io](https://img.shields.io/crates/v/arduino_mkrzero.svg)
-- [`arduino_nano33iot`](https://crates.io/crates/arduino_nano33iot) - Board support for the [Arduino Nano 33 IoT](https://store.arduino.cc/usa/nano-33-iot) in the [atsamd-rs] repo. It is an [atsamd-rs tier 2 support] board. ![crates.io](https://img.shields.io/crates/v/arduino_nano33iot.svg)
+- [`arduino_nano33iot`](https://crates.io/crates/arduino_nano33iot) - Board support for the [Arduino Nano 33 IoT](https://store.arduino.cc/products/arduino-nano-33-iot) in the [atsamd-rs] repo. It is an [atsamd-rs tier 2 support] board. ![crates.io](https://img.shields.io/crates/v/arduino_nano33iot.svg)
 
 ### Nordic