fix message links

Author: danthe1st

src/main/java/net/discordjug/javabot/listener/MessageLinkListener.java

@@ -31,7 +31,7 @@
  */
 public class MessageLinkListener extends ListenerAdapter {
 
-	private static final Pattern MESSAGE_URL_PATTERN = Pattern.compile("https://((?:canary|ptb)\\.)?discord.com/channels/[0-9]+/[0-9]+/[0-9]+");
+	private static final Pattern MESSAGE_URL_PATTERN = Pattern.compile("https://((?:canary|ptb)\\.)?discord(app)?.com/channels/[0-9]+/[0-9]+/[0-9]+");
 
 	@Override
 	public void onMessageReceived(@NotNull MessageReceivedEvent event) {