I found markdown parsers in smalltalkhub and in the configuration browser. 

http://smalltalkhub.com/#!/~PharoExtras/PetitMarkdown/

and the one in the configuration browser

PPMarkdown

If I understand it correctly both are rooted into work Camillo did. The one in PharoExtras looks newer to me. So I assume the best would be to copy the ConfigurationOfPetitMarkdown from PharoExtras to MetacelloRepo and remove the ConfigurationOfPPMarkdown. Right? Or are there any objections?

Norbert