MathJax CDN option text does not make sense

Howdy,

Thank you for such an awesome module!

Since patch #19 seems to be working, it would be nice to have a new release. ;)

Thank you!

cilefen → changed the visibility of the branch 2491623-mathjax-cdn-option to hidden.

@ilfelice The patch is nine years old and does not apply to the development branch, which is 4.x. If you or anyone opens a merge request, I will review it.