customcss.adoc in asciidoctor-revealjs-3.1.0

- old
+ new

@@ -1,7 +1,7 @@
 // .customcss
 // Use of the customcss attribute to load external CSS
-// :include: //body/script | //div[@class="slides"]
+// :include: //head//link[@rel="stylesheet"]
 // :header_footer:
 = Custom CSS
 Author
 :customcss: customcss.css
 