[css-fonts-4] List fonts used for Urdu samples

Author: svgeesus

css-fonts-4/Overview.bs

@@ -662,12 +662,12 @@ Generic font families</h4>
 
 			<figure>
 				<img style="width:40vw" alt="السلام علیکم" src="images/urdu-nastaliq.svg">
-				<figcaption>Urdu text displayed with a sample nastaliq font</figcaption>
+				<figcaption>Urdu text displayed with a sample nastaliq font (Noto Nastaliq Urdu)</figcaption>
 			</figure>
 
 			<figure>
 				<img style="width:40vw" alt="السلام علیکم" src="images/urdu-naskh.svg">
-				<figcaption>Urdu text displayed with a fallback naskh font</figcaption>
+				<figcaption>Urdu text displayed with a fallback naskh font (Scheherazade New)</figcaption>
 			</figure>
 
 	    <dt id="ui-serif-def"><dfn>ui-serif</dfn>