fix: added api-definitions product

Author: Kapil Gowru

fern/products/docs/docs.yml

@@ -85,7 +85,6 @@ navigation:
         hidden: true
         path: ./pages/component-library/custom-components/conditional-rendering.mdx
   - section: Configuration
-    collapsed: true
     contents:
       - page: What is docs.yml
         path: ./pages/customization/what-is-docs-yml.mdx