docs: update

Author: btea

docs/content/2.guide/1.features.md

@@ -154,7 +154,7 @@ You can add custom npmx badges to your markdown files using the following syntax
 
 You can further customize your badges by appending query parameters to the badge URL.
 
-#### `colorA`
+##### `colorA`
 
 Overrides the default label color. You can pass a standard hex code (with or without the `#` prefix).