bug#50775: ispell help message times out before most people can read it

[Eli Zaretskii]

> From: 積丹尼 Dan Jacobson
>  <jidanni@jidanni.org>
> Date: Fri, 24 Sep 2021 21:13:18 +0800
> 
> I typed
>  <escape> $            ;; ispell-word
> then I typed
>  ? ? ? ?
> in fact I need to type even more of them.
> 
> That's because the three line message that "?"
> shows times out in one second.

For me, it times out in 5 sec, not one.