Completion plugin only works for fish shell

[Yukaii]

https://github.com/MunifTanjim/oclif-plugin-completion/blob/b1f524250026db0e21112411c802e57319e235dc/src/commands/completion/generate/index.ts#L30-L52

[Yukaii]

Failed at here: https://github.com/MunifTanjim/oclif-plugin-completion/blob/b1f524250026db0e21112411c802e57319e235dc/src/utils/zsh.ts#L7

Need to fork the project to support it.

[Yukaii]

• Help command completion not display bin corretly