FYI, I've fixed the link to Miller's site that appears at the top of http://puredata.info/docs/manuals/pd/pd-documentation ; it was using a "www." prefix that didn't work. I've set it to " http://msp.ucsd.edu/Pd_documentation/index.htm", which is how my browser finally resolves it.
BTW, this page (on puredata.info) is outdated. I'm not sure of the correct way to update it to the latest (github) version.
Also, in the latest (github) version (and the Miller's site version) of index.htm, the link is "http://msp.ucsd.edu/software.html", but that seems wrong (as this points to the root of Miller's "software" page, not the "latest version of this [documentation] page".
Antoine