[css-color-4] whoops

Author: Chris Lilley

css-color-4/Overview.bs

@@ -723,8 +723,8 @@ and there shall be no thousands separator.
 <div class="example" id="ex-rgb-notrail">
 	<p>The serialized value of </p>
 	<pre class="lang-css"><span class="swatch" style="--color: goldenrod"></span> ''goldenrod''</pre>
-	<p>is the string "rgb(218 165 32)"
-	and not the string "rgb(218.000 165.000 32.000)"</p>
+	<p>is the string "rgb(218, 165, 32)"
+	and not the string "rgb(218.000, 165.000, 32.000)"</p>
 </div>
 
 <h4 id="serializing-lab-lch">Serializing Lab and LCH values</h4>