Update sample projects & samples in docs (#2823)

* update them all

* more docs

* moar docs

samples/InteractionFramework/Enums/ExampleEnum.cs

@@ -1,20 +1,13 @@
 using Discord.Interactions;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
-namespace InteractionFramework
+namespace InteractionFramework;
+
+public enum ExampleEnum
 {
-    public enum ExampleEnum
-    {
-        First,
-        Second,
-        Third,
-        Fourth,
-        [ChoiceDisplay("Twenty First")]
-        TwentyFirst
-    }
+    First,
+    Second,
+    Third,
+    Fourth,
+    [ChoiceDisplay("Twenty First")]
+    TwentyFirst
 }