fix missing 'v's in a few spots.

there are a few places where data is unfortunately inconsistent. Specifically, we're sometimes returning semver version with a "v" while other times we're not. You can see where this bubbles up in the [ranges tests](https://github.com/cutenode/nodevu/blob/main/ranges/test/v.test.js). Ideally, this will be solved in core as well, though I'm not yet sure if it's actually an issue there.

Regardless, anywhere we return a semver version we should start it with a "v" for the sake of consistency.