diff --git a/archetypes/default.md b/archetypes/default.md
index eaec1e6..dcf91c5 100644
--- a/archetypes/default.md
+++ b/archetypes/default.md
@@ -28,7 +28,7 @@ From [freeCodeCamp: How to write a great technical blog post][1]
 
 ## Syntax highlighting example
 
-```go {linenos=table,hl_lines=8 15-17,linenostart=199}
+```go {linenos=table,hl_lines=[8,"15-17"],linenostart=199}
 // GetTitleFunc returns a func that can be used to transform a string to
 // title case.
 //