document.html.slim in asciidoctor-revealjs-3.1.0

- old
+ new

@@ -25,10 +25,11 @@
       link rel='stylesheet' href='#{revealjsdir}/css/theme/#{attr 'revealjs_theme', 'black'}.css' id='theme'
     include asciidoctor_revealjs.css.slim
     - if attr? :icons, 'font'
       / iconfont-remote is implicitly set by Asciidoctor core. See https://github.com/asciidoctor/asciidoctor.org/issues/361
       - if attr? 'iconfont-remote'
-        link rel='stylesheet' href=(attr 'iconfont-cdn', %(#{cdn_base}/font-awesome/5.8.2/css/all.min.css))
+        link rel='stylesheet' href=(attr 'iconfont-cdn', %(#{cdn_base}/font-awesome/5.12.0-1/css/all.min.css))
+        link rel='stylesheet' href=(attr 'iconfont-cdn', %(#{cdn_base}/font-awesome/5.12.0-1/css/v4-shims.min.css))
       - else
         link rel='stylesheet' href=(normalize_web_path %(#{attr 'iconfont-name', 'font-awesome'}.css), (attr 'stylesdir', ''), false)
     - if attr? :stem
       - eqnums_val = (attr 'eqnums', 'none')
       - eqnums_val = 'AMS' if eqnums_val == ''