Add page on Analytics, update card descriptions (Ask Fern) (#750)

Author: devalog

fern/products/ask-fern/ask-fern.yml

@@ -17,6 +17,8 @@ navigation:
         path: ./pages/features/documents.mdx
   - section: Features
     contents:
+      - page: Analytics
+        path: ./pages/features/analytics.mdx
       - page: Citations
         path: ./pages/features/citations.mdx
       - page: Insights

fern/products/ask-fern/pages/assets/analytics.png

@@ -0,0 +1,15 @@
+---
+title: Analytics
+description: View usage metrics and conversation details from Ask Fern queries on your
+  documentation site.
+---
+
+The Ask Fern tab of your Fern Dashboard displays queries and conversations per day on your documentation site. You can view data by week, month, year, or all-time periods.
+
+Drill down into individual conversations to see the exact user queries and Ask Fern responses, helping you understand how users interact with your documentation. 
+
+<Frame>
+<img src="../assets/analytics.png" alt="Query and conversation analytics on Fern Dashboard" />
+</Frame>
+
+You can also export data to CSV format to identify trends and optimize your documentation strategy.

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

@@ -29,7 +29,7 @@ Ask Fern helps you:
     icon="regular book-open"
     href="/learn/ask-fern/configuration/custom-prompts"
   >
-    Tailor Ask Fern behavior to your users' needs. 
+    Write custom prompts to improve accuracy and tailor responses for your users. 
   </Card>
 
 </CardGroup>
@@ -38,6 +38,14 @@ Ask Fern helps you:
 
 <CardGroup cols={2}>
 
+  <Card 
+    title="Analytics" 
+    icon="regular fa-chart-simple"
+    href="/learn/ask-fern/features/analytics" 
+    >
+    View Ask Fern usage metrics and full conversation details on your Fern Dashboard.
+  </Card>
+
   <Card 
     title="Citations" 
     icon="fa-solid fa-quote-right"
@@ -51,15 +59,15 @@ Ask Fern helps you:
     icon="regular fa-question-circle"
     href="/learn/ask-fern/configuration/guidance" 
     >
-    Add custom FAQs to Ask Fern. 
+    Use guidance documents to override Ask Fern's responses to sensitive topics.
   </Card>
 
   <Card 
     title="Documents" 
     icon="regular file-alt"
     href="/learn/ask-fern/configuration/documents" 
     >
-    Add custom documents to Ask Fern. 
+    Add custom data sources to broaden Ask Fern's capabilities. 
   </Card>
 
   <Card