[Nmh-workers] mhpath documentation updated

[David Levine]

The mhpath man page said this:

  Message numbers greater than the highest existing message
  in a folder as part of a range designation are replaced
  with the next free message number.

And had this example, when the last message in the folder is 6:

  % mhpath 2001
  /r/phyl/Mail/foo/7

However, the actual behavior of mhpath is:

  % mhpath 2001
  mhpath: message 2001 out of range 1-6

even with the initial revision in the source code repository.

I updated the man page.

David