updated old version numbers from 2.1 to 2.2
updated old version numbers from 2.1 to 2.2
mitya57/mathjax-docs,mitya57/mathjax-docs,mathjax/MathJax-docs,mathjax/MathJax-docs,GerHobbelt/MathJax-docs,Axure/MathJax-docs,GerHobbelt/MathJax-docs,Axure/MathJax-docs