Fix code block indentation in markdown (#17)

* Fix code block indentation in markdown

* Update cache-dotnet-how-to-use-azure-redis-cache.md

* Update cache-web-app-howto.md

* Update cache-web-app-aspnet-core-howto.md

Author: v-dirichards

articles/azure-cache-for-redis/cache-dotnet-core-quickstart.md

@@ -55,10 +55,10 @@ dotnet add package Microsoft.Azure.StackExchangeRedis
 
 1. Include the libraries in your code
 
-```csharp
-using Azure.Identity;
-using StackExchange.Redis
-```
+   ```csharp
+   using Azure.Identity;
+   using StackExchange.Redis
+   ```
 
 1. Using the default Azure credentials to authenticate the client connection. This enables your code to use the signed-in user credential when running locally, and an Azure managed identity when running in Azure without code change.
 

articles/azure-cache-for-redis/cache-dotnet-how-to-use-azure-redis-cache.md

@@ -62,10 +62,10 @@ The [Azure.StackExchange.Redis](https://www.nuget.org/packages/Microsoft.Azure.S
 
 1. Include the libraries in your code
 
-```csharp
-using Azure.Identity;
-using StackExchange.Redis
-```
+   ```csharp
+   using Azure.Identity;
+   using StackExchange.Redis
+   ```
 
 1. Using the default Azure credentials to authenticate the client connection. This enables your code to use the signed-in user credential when running locally, and an Azure managed identity when running in Azure without code change.
 

articles/azure-cache-for-redis/cache-web-app-aspnet-core-howto.md

@@ -67,10 +67,10 @@ dotnet add package Microsoft.Azure.StackExchangeRedis
 
 1. Include the libraries in your code
 
-    ```csharp
-    using Azure.Identity;
-    using StackExchange.Redis
-    ```
+       ```csharp
+       using Azure.Identity;
+       using StackExchange.Redis
+       ```
 
 1. Using the default Azure credentials to authenticate the client connection. This enables your code to use the signed-in user credential when running locally, and an Azure managed identity when running in Azure without code change.
 

articles/azure-cache-for-redis/cache-web-app-howto.md

@@ -61,10 +61,10 @@ The [Azure.StackExchange.Redis](https://www.nuget.org/packages/Microsoft.Azure.S
 
 1. Include the libraries in your code
 
-```
-using Azure.Identity;
-using StackExchange.Redis
-```
+   ```
+   using Azure.Identity;
+   using StackExchange.Redis
+   ```
 
 1. Using the default Azure credentials to authenticate the client connection. This enables your code to use the signed-in user credential when running locally, and an Azure managed identity when running in Azure without code change.