Fix broken link to WIZnet W5500-EVB-Pico

examples/rp/src/bin/ethernet_w5500_multisocket.rs

@@ -1,6 +1,6 @@
 //! This example shows how you can allow multiple simultaneous TCP connections, by having multiple sockets listening on the same port.
 //!
-//! Example written for the [`WIZnet W5500-EVB-Pico`](https://www.wiznet.io/product-item/w5500-evb-pico/) board.
+//! Example written for the [`WIZnet W5500-EVB-Pico`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico) board.
 
 #![no_std]
 #![no_main]

examples/rp/src/bin/ethernet_w5500_tcp_client.rs

@@ -1,6 +1,6 @@
 //! This example implements a TCP client that attempts to connect to a host on port 1234 and send it some data once per second.
 //!
-//! Example written for the [`WIZnet W5500-EVB-Pico`](https://www.wiznet.io/product-item/w5500-evb-pico/) board.
+//! Example written for the [`WIZnet W5500-EVB-Pico`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico) board.
 
 #![no_std]
 #![no_main]

examples/rp/src/bin/ethernet_w5500_tcp_server.rs

@@ -1,7 +1,7 @@
 //! This example implements a TCP echo server on port 1234 and using DHCP.
 //! Send it some data, you should see it echoed back and printed in the console.
 //!
-//! Example written for the [`WIZnet W5500-EVB-Pico`](https://www.wiznet.io/product-item/w5500-evb-pico/) board.
+//! Example written for the [`WIZnet W5500-EVB-Pico`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico) board.
 
 #![no_std]
 #![no_main]

examples/rp/src/bin/ethernet_w5500_udp.rs

@@ -1,6 +1,6 @@
 //! This example implements a UDP server listening on port 1234 and echoing back the data.
 //!
-//! Example written for the [`WIZnet W5500-EVB-Pico`](https://www.wiznet.io/product-item/w5500-evb-pico/) board.
+//! Example written for the [`WIZnet W5500-EVB-Pico`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico) board.
 
 #![no_std]
 #![no_main]