Organize support integrations under dedicated Support section

This change wraps support-related integrations (like Intercom) in a
dedicated "Support" subsection within the Analytics & integrations
section of the documentation navigation. This improves the organization
and discoverability of support integration options.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: fern-support

fern/products/docs/docs.yml

@@ -233,9 +233,11 @@ navigation:
     contents:
       - page: Overview
         path: ./pages/integrations/overview.mdx
-      - page: Intercom
-        path: ./pages/integrations/support/intercom.mdx
-        slug: support/intercom
+      - section: Support
+        contents:
+          - page: Intercom
+            path: ./pages/integrations/support/intercom.mdx
+            slug: support/intercom
       - page: Google
         path: ./pages/integrations/analytics/google.mdx
         slug: analytics/google
@@ -253,7 +255,7 @@ navigation:
         slug: analytics/mixpanel
       - page: Postman
         path: ./pages/integrations/postman.mdx
-      - page: LaunchDarkly feature flags 
+      - page: LaunchDarkly feature flags
         path: ./pages/integrations/feature-flags.mdx
   - section: Developer tools
     collapsed: true