fix(docs): Minor consistency fixes. (#527)

Author: eyw520

fern/products/ask-fern/pages/features/documents.mdx

@@ -3,7 +3,10 @@ title: Documents
 subtitle: Add custom data sources to Ask Fern. 
 ---
 
-You can index custom documents beyond your core documentation to improve Ask Fern's capabilities. Adding content such as help desk tickets, internal company FAQs, and other resources can help provide better answers to developers. 
+## Overview
+
+You can index custom documents beyond your core documentation to improve Ask Fern's capabilities. 
+Adding content such as help desk tickets, internal company FAQs, and other resources can help provide better answers to developers. 
 
 Fern offers an internal CMS (content management system) via the `documents` API that allows you to add, update,
 and delete documents as needed. 

fern/products/ask-fern/pages/features/guidance.mdx

@@ -1,5 +1,5 @@
 ---
-title: Custom Guidance
+title: Guidance
 subtitle: Fine-tune your Ask Fern responses. 
 ---