system/asciidoctor: Update to 2.0.17

system/asciidoctor/APKBUILD

 # Contributor: Seung Soo Mun <hamletmun@gmail.com>
 # Maintainer: A. Wilcox <awilfox@adelielinux.org>
 pkgname=asciidoctor
-pkgver=2.0.16
+pkgver=2.0.17
 pkgrel=0
 pkgdesc="An implementation of AsciiDoc in Ruby"
 url="https://rubygems.org/gems/$pkgname"
@@ -34,4 +34,4 @@ package() {
 	done
 }
 
-sha512sums="2e164a0d24374e0c5461926c865c8900d3fb3f27606af5aac1a0a5f53102ca758f6421a113a9bb100fe7dba2e1accec04ca6ca16670e4b85e373f729bdaba6cd  asciidoctor-2.0.16.gem"
+sha512sums="41ebc833c7b8bded5704034c7fcf7d2f26643a24de24eda57db1a0ac94976e775bf0f093f46faaa99c5007c61af325aa5b02e5321159a88daac3397800adbd03  asciidoctor-2.0.17.gem"