Prepare for Hugo 0.60.0 (#71)

This commit will be reverted once https://github.com/gohugoio/hugo/issues/6544 is resolved.

config.toml

@@ -5,6 +5,10 @@ googleAnalytics = "UA-7131036-4"
 
 disableKinds = ["taxonomyTerm"]
 
+#due to math typesetting issues in goldmark see: https://github.com/gohugoio/hugo/issues/6544
+[markup]
+  defaultMarkdownHandler = "blackfriday"
+
 [module]
   [module.hugoVersion]
     min = "0.56.0"