apply GrowiRenderer plugin to reveal

src/client/js/legacy/crowi-presentation.js

@@ -37,6 +37,7 @@ require.ensure([], () => {
   require('reveal.js/plugin/markdown/markdown.js');
   require('reveal.js/plugin/zoom-js/zoom.js');
   require('reveal.js/plugin/notes/notes.js');
+  require('../util/reveal/plugins/growi-renderer.js');
 
   // fix https://github.com/weseek/crowi-plus/issues/96
   Reveal.slide(0, 0);