Bug 1561430 [wpt PR 17507] - Added another link to spec to numbers-units-001 test, a=testonly

Automatic update from web-platform-tests
Added another link to spec to anumbers-units-001 test (#17507)

--

wpt-commits: 73f28194f388630a856827e63e286883e6c42a12
wpt-pr: 17507

testing/web-platform/tests/css/CSS2/values/numbers-units-001.xht

@@ -4,6 +4,7 @@
         <title>CSS Test: Parsing invalid numbers - alphanumeric characters</title>
         <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
         <link rel="help" href="http://www.w3.org/TR/CSS21/syndata.html#numbers" />
+        <link rel="help" href="https://www.w3.org/TR/css-values-3/#integers" />
         <link rel="match" href="../reference/no-red-on-blank-page-ref.xht"/>
         <meta name="flags" content="invalid" />
         <meta name="assert" content="An integer cannot have alphanumeric characters within it." />
@@ -21,4 +22,4 @@
         <p>Test passes if there is no red visible on the page.</p>
         <div></div>
     </body>
-</html>
+</html>