doclint is too strict for </thead>, </tbody> and </tfoot>

According to html5 the closed tags for thead, tbody, tfoot are optional. But doclint generate an error if these tags are absent

https://www.w3.org/TR/html51/syntax.html#optional-tags.

A thead element’s end tag may be omitted if the thead element is immediately followed by a tbody or tfoot element.

A tbody element’s end tag may be omitted if the tbody element is immediately followed by a tbody or tfoot element, or if there is no more content in the parent element.

A tfoot element’s end tag may be omitted if the tfoot element is immediately followed by a tbody element, or if there is no more content in the parent element.