FIX broken "zola serve"

Author: gamecubate

config.toml

@@ -6,6 +6,7 @@ compile_sass = true
 
 # Whether to do syntax highlighting
 # Theme can be customised by setting the `highlight_theme` variable to a theme supported by Zola
+[markdown]
 highlight_code = true
 
 # Whether to build a search index to be used later on by a JavaScript library