[css-fonts-4][editorial] update changes

Author: svgeesus

css-fonts-4/Overview.bs

@@ -8018,11 +8018,14 @@ Changes
 <h3 id="changes-2021-12-21">Changes from the <a href="https://www.w3.org/TR/2021/WD-css-fonts-4-20211221/">21 December 2021 Working Draft</a> </h3>
 
 <ul>
-	<!-- to 26 Aug 2022 -->
+	<li>Added Web Platform Tests coverage</li>
+	<li>'font-palette' and '@font-palette-values' no longer at risk</li>
+	<li>Allowed limited set of string-form format specifies, for Web compatibility</li>
+	<li>Make feature-* features-* for consistency</li>
 	<li>Changed initial value of font-variant-emoji from auto to normal, for consistency with other font-variant-* properties
 	<li>Added values from font-variant-emoji to font-variant shorthand
 	<li>Added canonical list of font-variant-* properties affected by font-variant shorthand
-	<li>Renamed "system font fallback" to "installed font fallback
+	<li>Renamed "system font fallback" to "installed font fallback to avoid confusion with system font
 	<li>Updated property and descriptor values to use the range notation
 	<li>Fixed some examples which did not match the specification
 	<li>Clarified that color fonts are not enabled by default