Refactor mathjax mdx a bit
Refactor mathjax mdx a bit

timonwong/OmniMarkupPreviewer,Lyleo/OmniMarkupPreviewer,Lyleo/OmniMarkupPreviewer,timonwong/OmniMarkupPreviewer,timonwong/OmniMarkupPreviewer,timonwong/OmniMarkupPreviewer,Lyleo/OmniMarkupPreviewer,Lyleo/OmniMarkupPreviewer