main/unbound: fix initd script - missing command_background

Closes !16699

main/unbound/APKBUILD

@@ -4,7 +4,7 @@
 # Maintainer: Jakub Jirutka <jakub@jirutka.cz>
 pkgname=unbound
 pkgver=1.13.0
-pkgrel=1
+pkgrel=2
 pkgdesc="Unbound is a validating, recursive, and caching DNS resolver"
 url="http://unbound.net/"
 arch="all"
@@ -115,5 +115,5 @@ migrate() {
 sha512sums="d4f3c5a7df5d46f8b1ee32b61e68bdc0d63030820d236ecc51bc3ac356d15248acb9a5e0b6009e1936b03b751e8dd05a071a95ab239fdbbbb308442a59642ad5  unbound-1.13.0.tar.gz
 10e76b0c0e256cf81d55a6f089644693feb94bd2470730bcbcedb5f340397d2316f3a9ee57adc3d5e84e83cc26109c8cb48f6e2e3bfdbd186e40071b7b4284f1  conf.patch
 0a5c7b8f2b8c79c5384bce05962c8f8f5f31ce3aeb967b0e897361a24ea7065eb4e7c28ff3acfb0fb0d46be966d4e526e64b231f49b589ec63f576c25433bb59  migrate-dnscache-to-unbound
-eb21ada660f453f863997de770986c3e63c3f5aed59b842d3ceb38127218df2f05a6d4cd02a7b93654a72b66194993c29bfd8c45095ba8a700b9a877f71c263c  unbound.initd
+3b2b69e8895102a3b8d4654728089e6d70b3d3b75d1333f7775419f31730786756fb085d2497857d125a3e0b7d3c479b9bd760942b12c9c48149451900ddec0b  unbound.initd
 0ceae15d69deb24baa16990226de31fe743d84779a2595f31b4910b46ef925fc132cec1683d0a06141f707d9cbe517d731015702c60d9df4958ccfb9abd5a23f  unbound.confd"

main/unbound/unbound.initd

@@ -13,6 +13,7 @@ description_reload="Kills all children and reloads the configuration."
 
 command=/usr/sbin/unbound
 command_args="-d $command_args"
+command_backgroud=yes
 pidfile="/run/$RC_SVCNAME.pid"
 
 required_files="$cfgfile"