bf0f72a533d5 ("template: add exec and wrap") introduced wrap which
allowed to chain wrapText. It also changed the aerc-templates man page
to document wrap instead of wrapText. The templates weren't updated
then, so update now.
I also wonder if wrapText should be removed from the valid template commands.
That would intentionally break backward compatibility, but it feels weird to
have a command that is no longer documented still work.
Nah, the whole point of the exercise is to not break backwards compatibility.
Once enough time has gone by we start printing an annoying warning when we see
it and then eventually remove it.
Only those people who actually modified the template are affected, the rest will
get your version anyhow.