community/birdwatcher: fix install of ipv6 initd

The initd for IPv6 was added but not installed in !63386.

community/birdwatcher/APKBUILD

 # Maintainer: Thomas Liske <thomas@fiasko-nw.net>
 pkgname=birdwatcher
 pkgver=2.2.5
-pkgrel=6
+pkgrel=7
 pkgdesc="A JSON API for BIRD"
 url="https://github.com/alice-lg/birdwatcher"
 arch="all"
@@ -33,6 +33,7 @@ package() {
 	# fix the default config for bird 2.x+
 	sed -i -e 's@birdc6@birdc@' -e 's@bird6.conf@bird.conf@' "$pkgdir"/etc/birdwatcher/birdwatcher.conf
 	install -Dm755 "$srcdir"/birdwatcher.initd "$pkgdir"/etc/init.d/birdwatcher
+	install -Dm755 "$srcdir"/birdwatcher6.initd "$pkgdir"/etc/init.d/birdwatcher6
 }
 
 sha512sums="