update VS link & correct typo

Author: zhiyuanliang-ms

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

@@ -23,7 +23,7 @@ In this quickstart, a .NET Framework console app is used as an example, but the
 
 - 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).
-- [Visual Studio](https://visualstudio.microsoft.com/vs)
+- [Visual Studio](https://visualstudio.microsoft.com/downloads)
 - [.NET Framework 4.7.2 or later](https://dotnet.microsoft.com/download/dotnet-framework)
 
 ## Add a key-value

articles/azure-app-configuration/quickstart-dotnet-core-app.md

@@ -119,8 +119,6 @@ You use the [.NET command-line interface (CLI)](/dotnet/core/tools/) to create a
     export ConnectionString='connection-string-of-your-app-configuration-store'
     ```
 
-    Restart the command prompt to allow the change to take effect. Print the value of the environment variable to validate that it's set properly.
-
     ### [Linux](#tab/linux)
 
     If you use Linux, run the following command:
@@ -129,8 +127,6 @@ You use the [.NET command-line interface (CLI)](/dotnet/core/tools/) to create a
     export ConnectionString='connection-string-of-your-app-configuration-store'
     ```
 
-    Restart the command prompt to allow the change to take effect. Print the value of the environment variable to validate that it's set properly.
-
     ---
 
 1. Run the following command to build the console app: