main/asciidoc: upgrade to 8.6.8

main/asciidoc/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=asciidoc
-pkgver=8.6.7
+pkgver=8.6.8
 pkgrel=0
 pkgdesc="Text based documentation"
 url="http://www.methods.co.nz/asciidoc/"
@@ -38,5 +38,5 @@ package() {
 	make DESTDIR="$pkgdir" install
 }
 
-md5sums="edcf05b28ce21a4d27b1cd3028930021  asciidoc-8.6.7.tar.gz
+md5sums="6ffff1ab211f30481741ce4d1e4b12bf  asciidoc-8.6.8.tar.gz
 7e98fd7aa3fb61af56814e214bd1ab8a  vim.patch"