[docs] Possible bug in shutil docs for move() function

Hi, On page http://docs.python.org/2/library/shutil.html The fragment below move(src,dst) function says:

The destination directory must not already exist

However, the behavior of this function is that if the dst does not exist (and is provided as directory, with os separator at the end) it will raise an exception. IMHO it should be:

The destination directory must already exist.

Best Regards, Karol