app-arch/file-roller-3.32: update packages.match mapping

app-arch/file-roller-3.32: update packages.match mapping

If new decompressors support gets added, then packages.match needs
updating too, not just the README.gentoo message. Upstream package
uses that to actually suggest what package to install, when it
encounters something the package for isn't installed.
So update it (and add unsquashfs too, which was missed in 3.30), and
fix space vs tab mixup in the readme-gentoo added entry.

Package-Manager: Portage-2.3.69, Repoman-2.3.12
Signed-off-by: Mart Raudsepp <leio@gentoo.org>