Re: [PATCH 00/67] docs: Fix and clean up anchor links

First 50 patches remove the use of raw HTML passthrough in formatdomain.rst, which is the only outstanding place which still does.

Most of the work was done by a ad-hoc bash script, but manual tweaks were needed. Since this series also contains a test script which validates linking I'm not going to publish the conversion script. The rest of the series then cleans up pre-existing broken links and adds the aforementioned checker script. One more change is to prevent the use of external references in RST to refer to the same file. All usage was converted to local references and a syntax check was added. One slight drawback of the checker script is that it works on generated HTML files and thus the error message contains the output file name and not the source RST document.