Add basic tests of rule docs

[bmish]

1. Ensure rule doc title matches rule description (prevents these titles from becoming out-of-date).
2. Ensure rules with options have an ## Options section and rules without options don't.
3. Ensure rules with options have their named options mentioned in their rule doc.

[fisker]

Can you apply the same logic to this?

eslint-plugin-unicorn/scripts/template/documentation.md.jst

Line 1 in c10e2ba

# <%= description %>

Maybe we can add another property here.

eslint-plugin-unicorn/scripts/create-rule.mjs

Lines 137 to 140 in c10e2ba

	if (data.fixableType === 'No') {
	data.fixableType = false;
	}

[bmish]

Updated.

[bmish]

I'll be submitting another improvement after this is merged :)