boards: nrf5340: update web-page link for nRF5340 DK

Update the link to the external nRF5340 DK documentation.

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

boards/arm/nrf5340dk_nrf5340/doc/index.rst

@@ -326,6 +326,6 @@ References
 .. _IDAU:
    https://developer.arm.com/docs/100690/latest/attribution-units-sau-and-idau
 .. _nRF5340 DK website:
-   https://www.nordicsemi.com/Software-and-tools/Development-Kits/nRF5340-PDK
+   https://www.nordicsemi.com/Software-and-tools/Development-Kits/nRF5340-DK
 .. _Nordic Semiconductor Infocenter: https://infocenter.nordicsemi.com
 .. _Trusted Firmware M: https://www.trustedfirmware.org/projects/tf-m/