I just put https://github.com/D-Programming-Language/dlang.org/pull/760
out and also generated and uploaded verbatim ddoc files for dlang.org
(sans /phobos/, only /phobos-prerelease/).
For each document on the website, if you replace ".html" with
".verbatim" as the suffix, you'll see ddoc macros expanded in all their
glory, exactly as ddoc sees them.
Take a look:
http://dlang.org/index.verbatim
http://dlang.org/phobos-prerelease/std_algorithm.verbatim
With these it's easy to see what macros are responsible for which
semantic parts of the site, and you can change their definition accordingly.
Enjoy!
Andrei