CommandHelp shown as parameter

Hello,

I just use the Beta Help-system. He works perfectly nice except for one thing.
Let's considered this simple command:
```java
@HelpCommand
@Subcommand("h|help")
public static void helpContext(final CommandIssuer commandIssuer, final CommandHelp commandHelp, final @Default("1") Integer page) {
commandIssuer.sendMessage("Hi");
}
```

When I type `/guild help` (or `/guild h`), this help command is shown as a two parameter command:


This is an unexpected behavior, since this command really has only one parameter.

Exactly same as `CommandIssuer` , `CommandHelp` should be detected as a special parameter and not count on the final command.