[Rd] doc buglet / as.Date method

[Martin Maechler]

>>>>> "PR" == Paul Roebuck <plroebuck at mdanderson.org>
>>>>>     on Thu, 5 Jun 2008 10:55:54 -0500 (CDT) writes:

    PR> Under Details section for as.Date:

    PR> as.Date will accept numeric data (the number of days
    PR> since an epoch), but only is origin is supplied.
    PR>                           ^^
    PR> should be "if"

Thank you; that's fixed now.