update reveal.js

scripts/reveal.js/plugin/math/mathjax3.js

@@ -15,13 +15,13 @@ export const MathJax3 = () => {
             inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ]  ]
         },
         options: {
-            skipHtmlTags: [ 'script', 'noscript', 'style', 'textarea', 'pre' ]
+            skipHtmlTags: [ 'script', 'noscript', 'style', 'textarea', 'pre', 'code' ]
         },
         startup: {
             ready: () => {
                 MathJax.startup.defaultReady();
                 MathJax.startup.promise.then(() => {
-                    Reveal.layout();
+                    deck.layout();
                 });
             }
         }
@@ -66,7 +66,7 @@ export const MathJax3 = () => {
 
             loadScript( url, function() {
                 // Reprocess equations in slides when they turn visible
-                Reveal.addEventListener( 'slidechanged', function( event ) {
+                deck.addEventListener( 'slidechanged', function( event ) {
                     MathJax.typeset();
                 } );
             } );