Clarify sort example per issue dotnet#1875 (dotnet#801)

I added an additional "Jody" per issue dotnet/dotnet-api-docs#1875 to demonstrate how the sorting function handles duplicate values, and updated the sample unsorted and sorted output to demonstrate how the duplication is handled.

Author: TashasEv

snippets/csharp/VS_Snippets_CLR_System/system.collections.generic.list.sort/cs/Sort1.cs

@@ -6,7 +6,7 @@ public class Example
 {
    public static void Main()
    {
-      String[] names = { "Samuel", "Dakota", "Koani", "Saya", "Vanya",
+      String[] names = { "Samuel", "Dakota", "Koani", "Saya", "Vanya", "Jody",
                          "Yiska", "Yuma", "Jody", "Nikita" };
       var nameList = new List<String>();
       nameList.AddRange(names);
@@ -26,9 +26,9 @@ public static void Main()
 }
 // The example displays the following output:
 //    List in unsorted order:
-//       Samuel   Dakota   Koani   Saya   Vanya   Yiska   Yuma   Jody   Nikita
+//       Samuel   Dakota   Koani   Saya   Vanya   Jody   Yiska   Yuma   Jody   Nikita
 //
 //    List in sorted order:
-//       Dakota   Jody   Koani   Nikita   Samuel   Saya   Vanya   Yiska   Yuma
+//       Dakota   Jody   Jody   Koani   Nikita   Samuel   Saya   Vanya   Yiska   Yuma
 // </Snippet2>