This would fix the installation of the documentation and examples.

Index: b/PKGBUILD
===================================================================
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -9,7 +9,7 @@
 
 pkgname=asciidoc
 pkgver=8.6.9
-pkgrel=2
+pkgrel=3
 pkgdesc='Text document format for short documents, articles, books and UNIX man pages.'
 arch=('any')
 url='http://www.methods.co.nz/asciidoc/'
@@ -54,6 +54,7 @@
   cd ${pkgname}-${pkgver}
 
   make install DESTDIR=${pkgdir}
+  make docs DESTDIR=${pkgdir}
 
   install -Dm644 asciidocapi.py \
     ${pkgdir}/usr/lib/python2.7/site-packages/asciidocapi.py