Updated MimeKit and MimeKitLite (markdown)

MimeKit-and-MimeKitLite.md

@@ -21,7 +21,7 @@ The only solution for this is to apply the following changes to your project:
 
 In your C# code change this:
 
-``` csharp
+``` c#
 extern alias MimeKitAlias; // ⭐ Add this
 
 namespace MyNamespace