Fix documentation of parsec-query

[ilitzroth]

parsec-query is a Lisp macro in ‘parsec.el’.

(parsec-query PARSER &rest ARGS)

Get an alternative return value of the PARSER specified by the ARGS.

The args can be in the following forms:

    :beg      --> return the point before applying the PARSER
    :end      --> return the point after applying the PARSER
    :nil      --> return nil
    :groups N --> return Nth group for ‘parsec-re’.

As far as I can see only 1 argument makes sense in the ARGS position,
and will be used. Given the documentation I expected all of the args to
be used e.g.
(cl-query (xxx...) :beg :end) would return :beg and :end but only :beg
is returned.

[db48x]

Also, :groups should actually be :group.