community/acme-redirect: update reason for disabling loongarch64

nix 0.25.1 and 0.24.3 do not have loongarch64 support

community/acme-redirect/APKBUILD

@@ -6,6 +6,7 @@ pkgrel=0
 pkgdesc="Tiny http daemon that answers acme challenges and redirects everything else to https"
 url="https://github.com/kpcyrd/acme-redirect"
 # ppc64le and s390x blocked by ring crate
+# loongarch64 blocked by nix crates
 arch="all !ppc64le !s390x !loongarch64"
 license="GPL-3.0-or-later"
 makedepends="