Update changelog entry

Author: mohitjha-elastic

packages/elastic_security/changelog.yml

@@ -5,7 +5,7 @@
  Import ECS definitions in process-specific fields using external: ecs.
  Convert `*.supplemental_groups.id` fields to keyword to match ECS data types.
  type: enhancement
- link: https://github.com/elastic/integrations/pull/1
+ link: https://github.com/elastic/integrations/pull/14638
 - version: "0.1.0"
  changes:
  - description: Initial release.