Fix changelog

Author: legoguy1000

packages/cisco_umbrella/changelog.yml

@@ -3,4 +3,4 @@
  changes:
  - description: Initial migration from Filebeat Module
  type: enhancement
- link: https://github.com/elastic/integrations/pull/XXX
+ link: https://github.com/elastic/integrations/pull/1646

packages/cloudflare/changelog.yml

@@ -3,4 +3,4 @@
  changes:
  - description: initial release
  type: enhancement # can be one of: enhancement, bugfix, breaking-change
- link: https://github.com/elastic/integrations/pull/1646
+ link: https://github.com/elastic/integrations/pull/984