Fix PR link in a related change

I forgot to update the link 🤦‍♂️ (again)

Author: zmoog

packages/azure/changelog.yml

@@ -2,7 +2,7 @@
  changes:
  - description: Fix documentations formatting (remove extra 'Overview' heading)
  type: bugfix
- link: https://github.com/elastic/integrations/pull/3892
+ link: https://github.com/elastic/integrations/pull/4382
 - version: "1.5.0"
  changes:
  - description: Add Azure Application Gatewaty data stream