feat : add a host info when generating web url

[taenykim]

Hi, there 👋
I'm using this package in a Github enterprise.

When I use github release automatically, It's working well.
But if it's manual, The generated url is always github link. (not enterprise link)
So I added host information to generateWebUrl function.

For a similar code convention, I referred to the following.

release-it/lib/plugin/github/GitHub.js

Lines 152 to 153 in 7286e6e

	const host = this.options.host || this.getContext('repo.host');
	const isGitHub = host === 'github.com';

Thank you for your hard work.