feat: added cli changelog

Author: Kapil Gowru

fern/products/cli-api-reference/cli-api-reference.yml

@@ -9,7 +9,7 @@ navigation:
         slug: options
       - page: Commands
         path: ./pages/commands.mdx
-      - changelog: ./pages/changelogs/cli-changelog
+      - changelog: ./cli-changelog
   - api: API Reference
     api-name: public-api
     icon: fa-regular fa-pro