(AzureCXP) fixes MicrosoftDocs/azure-docs#105025

Updating the node runtime version from 14 to 18 in az functionapp create cmdlet since node 14 is deprecated in function app. currently supported node versions for function app are 14,16,18.

Author: Venkateshdodda-MSFT

articles/azure-functions/create-first-function-arc-cli.md

@@ -28,7 +28,7 @@ On your local computer:
 
 # [JavaScript](#tab/nodejs)
 
-+ [Node.js](https://nodejs.org/) version 12. Node.js version 10 is also supported.
++ [Node.js](https://nodejs.org/) version 18. Node.js version 14 is also supported.
 + [Azure Functions Core Tools version 4.x.](functions-run-local.md?tabs=v4%2Cnode#install-the-azure-functions-core-tools). 
 + [Azure CLI](/cli/azure/install-azure-cli) version 2.4 or later
 
@@ -152,7 +152,7 @@ az functionapp create --resource-group MyResourceGroup --name <APP_NAME> --custo
 
 # [JavaScript](#tab/nodejs)  
 ```azurecli
-az functionapp create --resource-group MyResourceGroup --name <APP_NAME> --custom-location <CUSTOM_LOCATION_ID> --storage-account <STORAGE_NAME> --functions-version 4 --runtime node --runtime-version 12
+az functionapp create --resource-group MyResourceGroup --name <APP_NAME> --custom-location <CUSTOM_LOCATION_ID> --storage-account <STORAGE_NAME> --functions-version 4 --runtime node --runtime-version 18
 ```
 
 # [Python](#tab/python)