8096054b

Don’t treat docs as transcripts

`transcripts` had run against all Markdown files in the repo to do a
basic sanity check on anything that might contain transcript stanzas.
However, for docs, it’s useful to make quick edits directly on GitHub,
which meant the golden files wouldn’t get updated, and the transcript
tests would fail after the change.

This removes `transcripts` checking on the `docs` folder to allow GitHub
edits of those files.