Fixed documentation of make_password kwargs.

    database to check against, and returns ``True`` if they match, ``False``

    otherwise.

.. function:: make_password(password[, salt, hashers])

.. function:: make_password(password, salt=None, hasher='default')

    Creates a hashed password in the format used by this application. It takes

    one mandatory argument: the password in plain-text. Optionally, you can