Add rel=help for serializing lab/oklab/lch/oklch
diff --git a/css/css-color/parsing/color-computed.html b/css/css-color/parsing/color-computed.html
index cf1b5b6..6d0a707 100644
--- a/css/css-color/parsing/color-computed.html
+++ b/css/css-color/parsing/color-computed.html
@@ -5,6 +5,8 @@
<title>CSS Color Module Level 3: getComputedStyle().color</title>
<link rel="help" href="https://drafts.csswg.org/css-color/#propdef-color">
<link rel="help" href="https://drafts.csswg.org/css-color-4/#serializing-color-function-values">
+<link rel="help" href="https://drafts.csswg.org/css-color-4/#serializing-lab-lch">
+<link rel="help" href="https://drafts.csswg.org/css-color-4/#serializing-oklab-oklch">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
