fixing the same mathjax/$ issue in content/3-4-concurrency.content.html this time
fixing the same mathjax/$ issue in content/3-4-concurrency.content.html this time

Drooids/isicp,sliz1/isicp,themattchan/isicp,zodiac/isicp,Drooids/isicp,themattchan/isicp,sliz1/isicp,themattchan/isicp,zodiac/isicp,zodiac/isicp,ldanz/isicp,ldanz/isicp,Drooids/isicp,themattchan/isicp,sliz1/isicp,Drooids/isicp,ldanz/isicp,zodiac/isicp,sliz1/isicp,ldanz/isicp