[css-fonts-4] Better fonts for Khmer example

Author: svgeesus

css-fonts-4/Overview.bs

@@ -691,9 +691,9 @@ Generic font families</h4>
 			<figure>
 				<img style="width:30vw" alt="" src="images/vi-tu-comparison.png">
 				<figcaption>Cambodian text displayed in:
-					(top) âksâr chôr style, set in Chantrea UI, by Sovichet Tep;
-					(center) âksâr mul style, set in Khmer OS Moul, by Dan Hong, with no ligatures;
-					(bottom) âksâr mul style, set in Khmer Moul, by pen sokha, with a ligature.
+					(top) âksâr chôr style, set in Khmer OS Battambang;
+					(center) âksâr mul style, set in Khmer OS Moul v6, with no ligatures;
+					(bottom) âksâr mul style, set in Khmer OS Moul v4, with two ligatures. All fonts by Dan Hong.
 				</figcaption>
 			</figure>
 		</dd>