In source documentation refers to a "status_name" function that doesn't exist

[peterharperuk]

/*!

• \name Link status
• \anchor CYW43_LINK_
• \see status_name() to get a user readable name of the status for debug
• \see cyw43_wifi_link_status() to get the wifi status
• \see cyw43_tcpip_link_status() to get the overall link status
  */

Can we remove this? See raspberrypi/pico-sdk#2729

[dpgeorge]

Fixed by #144.