As of
4280ec75cc
the lib/transform docs are generated with //go:generate and embedded with
//go:embed.
Before this change, however, they were not getting automatically updated with
subsequent changes (like
fe62a2bb4e)
because `go generate ./lib/transform` was not being run as part of the release
making process.
This change fixes that by running it in `make commanddocs`.
Before this change the help for convmv was generated by running the
examples each time rclone started up. Unfortunately this involved
running the echo command which did not work on Windows.
This pre-generates the help into `transform.md` and embeds it. It can
be re-generated with `go generate` which is a better solution.
See: https://forum.rclone.org/t/invoke-of-1-70-0-complains-of-echo-not-found/51618
