Update client.cs and complete.cs

Let's not have the client be a local variable, hm?

docs/guides/getting_started/samples/intro/client.cs

@@ -1,16 +1,17 @@
 // Program.cs
 using Discord.WebSocket;
 // ...
+private DiscordSocketClient _client;
 public async Task MainAsync()
 {
-	var client = new DiscordSocketClient();
+	_client = new DiscordSocketClient();
 
-	client.Log += Log;
+	_client.Log += Log;
 
 	string token = "abcdefg..."; // Remember to keep this private!
-	await client.LoginAsync(TokenType.Bot, token);
-	await client.StartAsync();
+	await _client.LoginAsync(TokenType.Bot, token);
+	await _client.StartAsync();
 
 	// Block this task until the program is closed.
 	await Task.Delay(-1);
-}
+}

docs/guides/getting_started/samples/intro/complete.cs

@@ -7,19 +7,21 @@ namespace MyBot
 {
 	public class Program
 	{
+		private DiscordSocketClient _client;
+		
 		public static void Main(string[] args)
 			=> new Program().MainAsync().GetAwaiter().GetResult();
 
 		public async Task MainAsync()
 		{
-			var client = new DiscordSocketClient();
+			_client = new DiscordSocketClient();
 
-			client.Log += Log;
-			client.MessageReceived += MessageReceived;
+			_client.Log += Log;
+			_client.MessageReceived += MessageReceived;
 
 			string token = "abcdefg..."; // Remember to keep this private!
-			await client.LoginAsync(TokenType.Bot, token);
-			await client.StartAsync();
+			await _client.LoginAsync(TokenType.Bot, token);
+			await _client.StartAsync();
 
 			// Block this task until the program is closed.
 			await Task.Delay(-1);
@@ -39,4 +41,4 @@ namespace MyBot
 			return Task.CompletedTask;
 		}
 	}
-}
+}