qualys_vmdr: fix pr link for 6.2.1/12969 (#15787)

Author: efd6

packages/qualys_vmdr/changelog.yml

@@ -83,7 +83,7 @@
   changes:
     - description: Fix package_nested field in asset data stream.
       type: bugfix
-      link: https://github.com/elastic/integrations/pull/1
+      link: https://github.com/elastic/integrations/pull/12969
 - version: "6.2.0"
   changes:
     - description: Update Kibana constraint to support 9.0.0.