Fix link to "Embed LaTeX, render TikZ, Chemfig etc" in docs
Fix link to "Embed LaTeX, render TikZ, Chemfig etc" in docs

Reverts https://github.com/shd101wyy/markdown-preview-enhanced/commit/027e0c1904f2257401d8b68d6613357d6d962168#diff-e70100059cc3a7376740bbe9751a082eR33
shd101wyy/atom-markdown-katex,shd101wyy/atom-markdown-katex