Update doc samples for correctness, consistency, and a better complete quickstart example.

docs/guides/samples/logging.cs

@@ -3,13 +3,13 @@ using Discord.Rest;
 
 public class Program
 {
-    // Note: This is the light client, it only supports REST calls.
+    // Note: This is the REST client, it only supports REST calls.
     private DiscordClient _client;
     static void Main(string[] args) => new Program().Start().GetAwaiter().GetResult();
     
     public async Task Start()
     {
-        _client = new DiscordClient(new DiscordConfig() {
+        _client = new DiscordRestClient(new DiscordConfig() {
 			LogLevel = LogSeverity.Info
         });