Replace existing rst reference with this reference
See also: tezos!1264 (closed). And this comment:
I agree we need to avoid duplication but this can also (and more easily) be achieved by deleting stuff in the michelson.rst file and pointing to the interactive reference (which would be hosted on http://tezos.gitlab.io). I don't think 100% of the Tezos documentation needs to be written in RST.