Update package_cleanup_policy.md

docs/resources/package_cleanup_policy.md

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 # generated by https://github.com/hashicorp/terraform-plugin-docs
 page_title: "artifactory_package_cleanup_policy Resource - terraform-provider-artifactory"
-subcategory: ""
+subcategory: "Configuration"
 description: |-
   Provides an Artifactory Package Cleanup Policy resource. This resource enable system administrators to define and customize policies based on specific criteria for removing unused binaries from across their JFrog platform. See Cleanup Policies https://jfrog.com/help/r/jfrog-platform-administration-documentation/cleanup-policies for more details.
   ~>Currently in beta and will be globally available in v7.98.x.