fix wording

Author: devalog

fern/products/docs/pages/customization/frontmatter.mdx

@@ -238,7 +238,7 @@ Currently, relative paths are _not_ supported for this field.
 
   - `guide`: The default documentation layout featuring a table of contents on the right side. Ideal for tutorials, how-to guides, and any content that benefits from easy navigation through sections.
 
-  - `overview`: A wider layout (50% wider than `guide`) with a table of contents. Perfect for landing pages and section overviews that need more horizontal space while maintaining navigation. Navigation sidebar remains visible.
+  - `overview`: A wider layout (50% wider than `guide`) with a table of contents and navigation sidebar. Perfect for landing pages and section overviews that need more horizontal space while maintaining navigation.
 
   - `reference`: A full-width layout optimized for API or SDK reference. Always hides the table of contents so you can add another column, such as code examples. Navigation sidebar remains visible.