Mistake in the Contributing Guidelines

[ericcornelissen]

Hi, while I was working on my first PR for this repository I found a small mistake in the Contributing Guidelines but I'm unsure as to what the intended content is... The CONTRIBUTING.md contains the following line

-   Code should pass `npm test` (alias of `eslint .`).

However, when you look at the package.json ⬇️ you can see that npm test is an alias for apm test and not eslint . (which is aliased by npm run lint)

linter-htmlhint/package.json

Lines 30 to 33 in 19b0e5a

	"scripts": {
	"test": "apm test",
	"lint": "eslint ."
	},

Again, I'm unsure what you guys originally intended, but I guess it should be something like:

-   Code should pass `npm test` and `npm run lint` (this tests and lints your changes).