Documentation: Add syntax highlighting for example
@@ -124,7 +124,7 @@ resource "matchbox_profile" "coreos-install" {
Matcher groups match machines based on labels like MAC, UUID, etc. to different profiles and templates in machine-specific values. This group does not have a `selector` block, so any machines which network boot from matchbox will match this group and be provisioned using the `coreos-install` profile. Machines are matched to the most specific matching group.
-```
+```hcl
resource "matchbox_group" "default" {
name = "default"
profile = "${matchbox_profile.coreos-install.name}"
