I tried a simple test in Github pages to be able to include Modelica language but the highlight does not work on github pages whereas it is working in github markdown rendering
Working here : https://github.com/gautierbureau/gautierbureau.github.io/blob/master/index.md
Not working here : https://gautierbureau.github.io/
I read some stuff abut backtick and tilde and used both but did not change anything... Then I also read some stuff about rouge syntax highlighter but it dit not work either (maybe my configuration was not good but I couln't find any simple solution...)