fix: Typo

Author: Rafiot

objects/paloalto-threat-event/definition.json

@@ -76,4 +76,4 @@
   "name": "paloalto-threat-event",
   "uuid": "e6fa7a87-1173-43d6-86c2-b4d02af5fc74",
   "version": 5
-}
+}