--domain flag is not documented

[jonybekov]

Hi. Great tool, very grateful.

However, I felt like the introduction documentation is not well documented. Especially, --domain and --host flags.

I was trying to inspect WebOS TV and when I run chii start --port 8080, I wasn't able to establish connection between TV and inspector.
Then I read source code, and noticed that there's a --domain flag that enables to custom IP address.
Using the following command, I was able to inspect my WebOS TV: npx chii start --domain 192.168.1.251:8080