update PR id in changelog

Author: stefans-elastic

packages/kafka_log/changelog.yml

@@ -2,7 +2,7 @@
   changes:
     - description: Add SASL mechanism configuration.
       type: enhancement
-      link: https://github.com/elastic/integrations/pull/1
+      link: https://github.com/elastic/integrations/pull/15647
 - version: "1.8.1"
   changes:
     - description: Updated SSL description to be uniform and to include links to documentation.