Make help string links consistent.

[willavos]

Commit 80fa400 corrected some "help links" but not others (if I run open2opaque rewrite -h I still see godoc based links).

This PR rectifies all other printed help links.

There is one other reference to a godoc based link within ignore.go:47 which I have not touched.

// LoadList loads an ignore list from files matching the provided glob pattern
// (see http://godoc/3/file/base/go/file#Match for the syntax definition).
func LoadList(pattern string) (*List, error) {
	matches, err := glob(pattern)
	if err != nil {
		return nil, err
// etc

Thanks!

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[stapelberg]

Thanks, but we are not set up to accept PRs in this repository right now.

I’ll fix this internally and push it out.