Update rest-api-spec (#3974)

Co-authored-by: pquentin <[email protected]>

Author: github-actions[bot]

specification/security/get_user_privileges/SecurityGetUserPrivilegesResponse.ts

@@ -31,7 +31,7 @@ export class Response {
     cluster: string[]
     /**
      * @availability stack since=8.15.0
-    */
+     */
     remote_cluster?: RemoteClusterPrivileges[]
     global: GlobalPrivilege[]
     indices: UserIndicesPrivileges[]