Update doc for version 5.2

Rakefile

@@ -153,6 +153,7 @@ namespace :examples do
     FileUtils.cp 'examples/a11y-dark.css', "#{PUBLIC_DIR}/a11y-dark.css"
     FileUtils.cp 'examples/release-5.1.html', "#{PUBLIC_DIR}/release-5.1.html"
     FileUtils.cp 'examples/release-5.1.css', "#{PUBLIC_DIR}/release-5.1.css"
+    FileUtils.cp 'examples/release-5.2.html', "#{PUBLIC_DIR}/release-5.2.html"
   end
 end
 

examples/release-5.2.adoc

@@ -0,0 +1,35 @@
+= Asciidoctor reveal.js 5.2
+//:stem:
+:source-highlighter: highlight.js
+:highlightjs-theme: a11y-dark.css
+:highlightjs-languages: asciidoc
+:icons: font
+:imagesdir: images/
+// reveal.js config
+:customcss: release-5.1.css
+:revealjs_theme: moon
+:revealjs_hash: true
+:revealjs_width: 1080
+
+== New Features icon:rocket[set=fas]
+
+== Iterating through callouts
+[source, javascript]
+----
+let a = 2; <1>
+let b = 3; <2>
+console.log(a+b); <3>
+----
+[%step]
+<1> It is now possible to iterate through callout lists...
+<2> using the `%step` attribute...
+<3> to explain code more easily !
+
+[transition=fade,transition-speed=slow]
+== Learn More!
+
+* https://github.com/asciidoctor/asciidoctor-reveal.js/[Asciidoctor reveal.js]
+* https://revealjs.com[reveal.js]
+* https://github.com/asciidoctor/asciidoctor/[Asciidoctor]
+* https://asciidoc.org/[What is AsciiDoc?]
+* https://github.com/asciidoctor/asciidoctor-reveal.js/raw/master/examples/release-5.1.adoc[Source of this presentation (AsciiDoc)]

src/index.html

@@ -21,6 +21,7 @@ <h1 class="title">
     <div class="container">
       <div class="content">
         <ul>
+          <li><a href="./release-5.2.html">Asciidoctor reveal.js 5.2</a></li>
           <li><a href="./release-5.1.html">Asciidoctor reveal.js 5.1</a></li>
           <li><a href="./release-4.1.html">Asciidoctor reveal.js 4.1</a></li>
           <li><a href="./release-4.0.html">Asciidoctor reveal.js 4.0</a></li>