Small doc fixes + add doc build to lint stage in CI
Adding a doc build job to the CI so that we don't end up with broken internal links all the time.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
Adding a doc build job to the CI so that we don't end up with broken internal links all the time.