bug#56393: Actually fix the long lines display bug

[Eli Zaretskii]

> Date: Wed, 20 Jul 2022 13:42:26 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: gerd.moellmann@gmail.com, larsi@gnus.org, 56393@debbugs.gnu.org
> 
> Is this better/clearer: "Increase the counter more for a large 
> modification and less for a small modification.  Increase it 
> logarithmically to avoid increasing it too much."?

Sounds good, thanks.