doc: Updated nrf util device version

Updated nrf util device version in docs.

Signed-off-by: Francesco Domenico Servidio <[email protected]>

Author: FrancescoSer

doc/nrf/shortcuts.txt

@@ -8,7 +8,7 @@
 
 .. |jlink_ver| replace:: v8.60
 
-.. |54H_nrfutil_device_ver| replace:: 2.12.6
+.. |54H_nrfutil_device_ver| replace:: 2.13.1
 .. |54H_nrfutil_trace_ver| replace:: 4.0.1
 
 .. ### Config shortcuts