Unwrap lines that appear to be wrapped citation lines.
You can control what lines will be unwrapped by frobbing
`gnus-outlook-deuglify-unwrap-min' and `gnus-outlook-deuglify-unwrap-max',
indicating the minimum and maximum length of an unwrapped citation line. If
NODISPLAY is non-nil, don't redisplay the article buffer.
(fn &optional NODISPLAY)