Use the simplest URL for Git repo

What does this Merge Request do and why?

Follows up !2002 (merged)

See https://docs.npmjs.com/cli/v7/configuring-npm/package-json#repository:

Do it like this:

{
  "repository": {
    "type": "git",
    "url": "https://github.com/npm/cli.git"
  }
}