[css-fonts-5][editorial] Update changes

Author: svgeesus

css-fonts-5/Overview.bs

@@ -741,7 +741,7 @@ Changes
 <h3 id="changes-20211221">Changes since the <a href="https://www.w3.org/TR/2021/WD-css-fonts-5-20211221/">WD of 21 December 2021</a> </h3>
 
 <ul>
-	<!-- to 2 Oct 2023  -->
+	<!-- to 14 Dec 2023  -->
 	<li>Corrected the initial value for the font-size descriptor</li>
 	<li>Set a range for the grammar of font-size-adjust number</li>
 	<li>Changed grammar of local() to use family-name instead for font-face-name</li>