bug#25581: 25.1; Incorrect statement in (elisp) `Hooks'

[Drew Adams]

> Better, but the typical practice of setq'ing to another named
> function should be mentioned before advice.

Before or after, I don't know.  But it should be clear to
a user at the end that s?he _can_ use _any_ of these (and
similar):

 setq (-local etc), set
 add-hook
 add-function

And if Emacs wants to make a point of _recommending_ one
of these (for a hook named `*-function') then it should,
I think, point out some of its _advantages_.