PW DE LA Article ref to Guides variant added

ofl/playwritedela/article/ARTICLE.en_us.html

@@ -26,6 +26,10 @@
 	Playwrite Deutschland Lateinische Ausgangsschrift is a variable font with a
 	weight range from Thin (100) to Regular (400), and supports over 150
 	Latin-based languages.
+	It has a single-weight sibling with Guides, 
+	<a href="https://fonts.google.com/specimen/Playwrite+DE+LA+Guides">Playwrite DE LA Guides</a>, 
+	designed to harmonize seamlessly with this main font while providing a 
+	visual aid for primary school children.
 </p>
 <p>
 	To contribute, see