--help displays multiple outputs for the -h flag

[jhalek90]

• code-server version: 1.1119-vsc1.33.1
• OS Version: Ubuntu 16.04

Description

-h flag is displayed as shorthand for both --host and --help

Steps to Reproduce

1. code-server --help
   

[sr229]

CC @coadler

[deansheather]

The shorthand for --host should be changed to -H as I've seen other tools do in the past.

EDIT: my bad, it's already taken by --allow-http.

[coadler]

Which one currently takes precedence?

[deansheather]

-h does --host:

$ code-server -h
error: option `-h, --host <value>' argument missing