Allow man pages to link to each other

doc/generate_asciidoc.sh

 #!/bin/bash
 
 # Copyright 2015 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
@@ skipping 70 matching lines @@
   # Create “man” output.
   #
   # AsciiDoc 8.6.9 produces harmless incorrect warnings each time this is run:
   # “a2x: WARNING: --destination-dir option is only applicable to HTML based
   # outputs”. https://github.com/asciidoc/asciidoc/issues/44
   a2x \
       --attribute mansource=Crashpad \
       --attribute manversion="${version}" \
       --attribute manmanual="Crashpad Manual" \
       --attribute revdate="${git_date}" \
+      --asciidoc-opts=--conf-file=doc/asciidoc.conf \
       --doctype manpage \
       --format manpage \
       --destination-dir "${output_dir}/man" \
       "${input}"
 
   # For PDF output, use an a2x command like the one above, with these options:
   # --format pdf --fop --destination-dir "${output_dir}/pdf"
 done