add await

src/server/routes/apiv3/page.js

@@ -228,7 +228,7 @@ module.exports = (crowi) => {
       }
 
       const Revision = crowi.model('Revision');
-      const revision = Revision.findById(revisionIdForFind);
+      const revision = await Revision.findById(revisionIdForFind);
 
       const markdown = revision.body;