[nxp][examples][rt1060] Update WiFi credentials setting in RT1060 readme (#36496)
diff --git a/examples/all-clusters-app/nxp/rt/rt1060/README.md b/examples/all-clusters-app/nxp/rt/rt1060/README.md
index 96822ff..3ddcbd7 100644
--- a/examples/all-clusters-app/nxp/rt/rt1060/README.md
+++ b/examples/all-clusters-app/nxp/rt/rt1060/README.md
@@ -310,7 +310,7 @@
build-time which will enable the device to join the Wi-Fi AP at startup):
```
-user@ubuntu:~/Desktop/git/connectedhomeip/examples/all-clusters-app/nxp/rt/rt1060$ gn gen --args="chip_enable_wifi=true iwx12_transceiver=true evkname=\"evkcmimxrt1060\" chip_config_network_layer_ble=false tcp_download=true wifi_ssid=\"your_wifi_ssid\" wifi_password=\"your_wifi_password\"" out/debug
+user@ubuntu:~/Desktop/git/connectedhomeip/examples/all-clusters-app/nxp/rt/rt1060$ export ssid_name=<nwk_ssid> && export ssid_password=<nwk_password> && gn gen --args="chip_enable_wifi=true iwx12_transceiver=true evkname=\"evkcmimxrt1060\" chip_config_network_layer_ble=false wifi_auto_connect_at_boot=true wifi_auto_connect_at_boot_ssid=\"${ssid_name}\" wifi_auto_connect_at_boot_password=\"${ssid_password}\"" out/debug
user@ubuntu:~/Desktop/git/connectedhomeip/examples/all-clusters-app/nxp/rt/rt1060$ ninja -C out/debug
```
@@ -400,7 +400,7 @@
- Build Matter with Border Router configuration with onnetwork commissioning:
```
-user@ubuntu:~/Desktop/git/connectedhomeip/examples/all-clusters-app/nxp/rt/rt1060$ gn gen --args="chip_enable_wifi=true w8801_transceiver=true nxp_enable_matter_cli=true chip_config_network_layer_ble=false wifi_auto_connect_at_boot=true wifi_auto_connect_at_boot_ssid=\"your_wifi_ssid\" wifi_auto_connect_at_boot_password=\"your_wifi_password\" chip_enable_openthread=true k32w0_transceiver=true k32w0_transceiver_bin_path=\"/path/to/ot-rcp/ot-rcp-ble-hci-bb-k32w061.elf.bin.h\"" out/debug
+user@ubuntu:~/Desktop/git/connectedhomeip/examples/all-clusters-app/nxp/rt/rt1060$ export ssid_name=<nwk_ssid> && export ssid_password=<nwk_password> && gn gen --args="chip_enable_wifi=true w8801_transceiver=true nxp_enable_matter_cli=true chip_config_network_layer_ble=false wifi_auto_connect_at_boot=true wifi_auto_connect_at_boot_ssid=\"${ssid_name}\" wifi_auto_connect_at_boot_password=\"${ssid_password}\" chip_enable_openthread=true k32w0_transceiver=true k32w0_transceiver_bin_path=\"/path/to/ot-rcp/ot-rcp-ble-hci-bb-k32w061.elf.bin.h\"" out/debug
user@ubuntu:~/Desktop/git/connectedhomeip/examples/all-clusters-app/nxp/rt/rt1060$ ninja -C out/debug
```
