Documentation Cleanup (#8851)

docs/cmdlet-example/visual-studio-simple-example.md

@@ -30,7 +30,7 @@ Add another package source with name `powershell-core` and source `https://power
 ![Step4](./Images/Step4.png)
 
 1. Add the code of cmdlet:
-    ```CSharp
+    ```csharp
     using System.Management.Automation;  // PowerShell namespace.
 
     namespace SendGreeting
@@ -90,7 +90,7 @@ It should find `PowerShellStandard.Library` package, select it and it will show
 ![StdImage3](./Images/Std3.png)
 
 1. Add the code of cmdlet:
-    ```CSharp
+    ```csharp
     using System.Management.Automation;  // PowerShell namespace.
 
     namespace SendGreeting
@@ -128,4 +128,4 @@ It should find `PowerShellStandard.Library` package, select it and it will show
 On PowerShell Core on Linux:
 ![StdImage62](./Images/Std62.png)
 On Windows PowerShell on Windows (this requires [.NET Framework 4.7.1](https://github.com/Microsoft/dotnet-framework-early-access/blob/master/instructions.md)):
-![StdImage63](./Images/Std63.png)
+![StdImage63](./Images/Std63.png)