Update changelog link

Updated the link for documentation enhancement in changelog.

Author: vinit-chauhan

packages/checkpoint/changelog.yml

@@ -3,7 +3,7 @@
   changes:
     - description: Update documentation.
       type: enhancement
-      link: https://github.com/elastic/integrations/pull/1
+      link: https://github.com/elastic/integrations/pull/16015
 - version: "1.42.0"
   changes:
     - description: Preserve event.original on pipeline error.