Fix metadata for Resource Label Events API page

doc/api/resource_label_events.md

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 stage: Manage
-group: Compilance
+group: Compliance
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
-# Resource label events API
+# Resource label events API **(FREE)**
 
-Resource label events keep track about who, when, and which label was added to, or removed from, an issuable.
+Resource label events keep track about who, when, and which label was added to (or removed from)
+an issue, merge request, or epic.
 
 ## Issues