Fix MathML example

johnfactotum · web-flow · commit 5eaef9c2808c · 2022-11-15T18:29:38.000+08:00
`allowScriptedContent` is required for MathJax to run
diff --git a/examples/mathml.html b/examples/mathml.html
@@ -28,7 +28,8 @@
     var rendition = book.renderTo("viewer", {
       width: "100%",
       height: 600,
-      spread: "always"
+      spread: "always",
+      allowScriptedContent: true
     });
 
     rendition.display(currentSectionIndex);
