Markdown: Update known failures.
Markdown: Update known failures.

PrismJS/prism,PrismJS/prism,CupOfTea696/prism,byverdu/prism,byverdu/prism,byverdu/prism,byverdu/prism,mAAdhaTTah/prism,mAAdhaTTah/prism,CupOfTea696/prism,mAAdhaTTah/prism,PrismJS/prism,CupOfTea696/prism,mAAdhaTTah/prism,CupOfTea696/prism,byverdu/prism,CupOfTea696/prism,PrismJS/prism,mAAdhaTTah/prism,PrismJS/prism