improve syntax/code display

config.toml

@@ -2,8 +2,10 @@ baseurl = "https://mehl.mx/"
 languageCode = "en-GB"
 title = "Max Mehl"
 theme = [ "hugo-sustain", "hugo-cloak-email", "hugo-mastodon-comments", "hugo-snap-gallery" ]
-PygmentsStyle = "friendly"
-pygmentsCodeFences = true
+
+[markup.highlight]
+codeFences = true
+style = "emacs"
 
 [blackfriday]
 # preserves linebreaks, and transforms to <br />