`-c` option no longer working

[tmokmss]

Hi, I found an error when using -c option. --config works though.

$ alp -c alp.yaml ltsv --file /var/log/nginx/access.log
2023/11/09 09:58:41 unknown shorthand flag: 'c' in -c
$ alp --version
1.0.21

Maybe we should update README here?

alp/README.md

Lines 541 to 543 in d91a23d

	- `-c, --config`
	- The configuration file
	- YAML

[tkuchiki]

@tmokmss I'm sorry for the late response, and thank you for opening the issue.

I will fix it!