[Python-Dev] devguide: Fix a silly statement.

[Éric Araujo]

> Well, it's no good to keep using CVCS terms and mislead users.  That the
> "checkout" is not a checkout but a full repository is about the most important
> fact about a hg (or any DVCS) clone.

Well, to really use the Mercurial terms, what you have when you get
stuff from a remote server to your disk is a clone, which contains a
full repository and may contain a working copy (also called checkout).

IOW, “check out” is used with Mercurial, as a synonym for “update”, an
operation from the (local) repo to the working directory; the
CVCS-inspired mistake is to use that to refer to an operation from a
remote server to the local disk (“clone”, “pull”).  HTH

Regards