Polish guide to set env using CMD

Author: Eskibear

articles/azure-app-configuration/quickstart-javascript-provider.md

@@ -132,14 +132,14 @@ Add the following key-values to the App Configuration store. For more informatio
     export AZURE_APPCONFIG_CONNECTION_STRING='<app-configuration-store-connection-string>'
    ```
 
-1. Restart the command prompt to allow the change to take effect. Print out the value of the environment variable to validate that it is set properly with the command below.
+1. Print out the value of the environment variable to validate that it is set properly with the command below.
 
     ### [Windows command prompt](#tab/windowscommandprompt)
 
-    Using the Windows command prompt, run the following command:
+    Using the Windows command prompt, restart the command prompt to allow the change to take effect and run the following command:
 
     ```cmd
-    printenv AZURE_APPCONFIG_CONNECTION_STRING
+    echo %AZURE_APPCONFIG_CONNECTION_STRING%
     ```
 
     ### [PowerShell](#tab/powershell)
@@ -164,6 +164,7 @@ Add the following key-values to the App Configuration store. For more informatio
 
     ```console
     echo "$AZURE_APPCONFIG_CONNECTION_STRING"
+    ```
 
 1. After the build successfully completes, run the following command to run the app locally:
 

articles/azure-app-configuration/quickstart-javascript.md

@@ -20,7 +20,7 @@ This document shows examples of how to use the [Azure SDK for JavaScript](https:
 
 ## Prerequisites
 
-- Azure subscription - [create one for free](https://azure.microsoft.com/free/)
+- An Azure account with an active subscription - [Create one for free](https://azure.microsoft.com/free/)
 - An App Configuration store. [Create a store](./quickstart-azure-app-configuration-create.md#create-an-app-configuration-store).
 - [LTS versions of Node.js](https://github.com/nodejs/release#release-schedule). For information about installing Node.js either directly on Windows or using the Windows Subsystem for Linux (WSL), see [Get started with Node.js](/windows/dev-environment/javascript/nodejs-overview)