[IRCServices Coding] Correction in language file

[Andrew Church]

     Fixed, thanks.

>en_us.l:
>NICK_SETAUTH_USER_NOTICE
>        You must authorize your nickname before continuing to use it.  An
>author
>        Type ^B/msg %S HELP AUTH^B for more information.
>
>Should be %s.
>
>-- Ben Goldstein (beng at nc.rr.com)
>
>
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  --Andrew Church
    achurch at achurch.org
    http://achurch.org/