Bug 1514576 [wpt PR 14545] - Update <button type="menu"> test to refl…

…ect its removal, a=testonly

Automatic update from web-platform-tests
Update <button type="menu"> test to reflect its removal

<button type="menu"> got removed in whatwg/html#2342 and this test was failing in all browsers.

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wpt-commits: 11971ac2161859001b861630338c0e47fee1b59a
wpt-pr: 14545

testing/web-platform/tests/html/semantics/forms/the-button-element/button-validation.html

@@ -24,6 +24,6 @@
   willValid(document.getElementById('btn2'), "submit", true, "submit type attribute");
   willValid(document.getElementById('btn3'), "reset", false, "reset type attribute");
   willValid(document.getElementById('btn4'), "button", false, "button type attribute");
-  willValid(document.getElementById('btn5'), "menu", false, "menu type attribute");
+  willValid(document.getElementById('btn5'), "submit", true, "historical menu type attribute");
   willValid(document.getElementById('btn6'), "submit", true, "invalid type attribute");
 </script>