Update htmllint rules for the new version.

Gruntfile.js

@@ -337,7 +337,7 @@ module.exports = function (grunt) {
       options: {
         ignore: [
           'Element “img” is missing required attribute “src”.',
-          'Attribute “autocomplete” not allowed on element “input” at this point.',
+          'Attribute “autocomplete” is only allowed when the input type is “color”, “date”, “datetime”, “datetime-local”, “email”, “month”, “number”, “password”, “range”, “search”, “tel”, “text”, “time”, “url”, or “week”.',
           'Attribute “autocomplete” not allowed on element “button” at this point.',
           'Element “div” not allowed as child of element “progress” in this context. (Suppressing further errors from this subtree.)',
           'Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).',