extra dashes in edgedb subcommand help

[1st1]

{edgedb} ~/d/e/edgedb-cli (master) » edgedb instance create --help
edgedb-instance-create 

Initialize a new server instance

Instead of edgedb-instance-create it should say edgedb instance create

[tailhook]

Well, this isn't a mistake or typo, this is how clap always works. Have to research why it's done so, and is it tunable. Not a priority, though.

[1st1]

https://github.com/clap-rs/clap/issues/1431 -- looks like it's not there yet. We might need to contribute a fix to clap.