Update redirect to be non-permanent

Removed permanent flag from a redirect in docs.yml

Author: dannysheridan

fern/docs.yml

@@ -168,7 +168,6 @@ redirects:
 
   - source: /learn/docs/content/
     destination: /learn/docs/customization
-    permanent: false
   # ============================================================================
   # GENERAL REDIRECTS
   # ============================================================================