fix change type in changelog

Author: stefans-elastic

packages/vsphere/changelog.yml

@@ -2,7 +2,7 @@
 - version: "1.18.2"
  changes:
  - description: Updated vSphere supported versions in documentation.
- type: bugfix
+ type: enhancement
  link: https://github.com/elastic/integrations/pull/13401
 - version: "1.18.1"
  changes: