Cute, but I just ran both your suggestions through the HTML validator at https://validator.w3.org/nu/ and neither of them validated.

The first error read "Bad value data: for attribute href on element link: Premature end of URI."

The 2nd error read "Missing space before doctype name."

Depending on the context these hacks may still be useful, but I personally think that both production sites and code golfing should require valid HTML.