some next straglers

Author: rpiazza

extension-definition-specifications/incident-ef7/examples/example_2.2.json

@@ -20,7 +20,7 @@
     ],
     "goal": "Gain unauthorized access to sensitive information.",
     "name": "Phishing Attack",
-    "next_event_refs": [
+    "next_events_refs": [
         "event--193a3ea2-32ae-4bfd-b353-16836ab70788",
         "event--d263f0f6-4c6c-4f77-a7fd-10368f0cb50a"
     ],

extension-definition-specifications/incident-ef7/examples/example_2.4.json

@@ -19,7 +19,7 @@
         "blocked"
     ],
     "name": "Mitigation Task",
-    "next_task_refs": [
+    "next_tasks_refs": [
         "task--1cb3fbba-3216-4fd7-a1c2-b33473d20ed7"
     ],
     "priority": 80,

extension-definition-specifications/incident-ef7/examples/incident_expo_4.json

@@ -368,7 +368,7 @@
             "start_time_fidelity": "day",
             "end_time": "2022-09-04T22:00:00.000Z",
             "end_time_fidelity": "day",
-	    "next_event_refs": [
+	    "next_events_refs": [
 		"event--403bce56-2e26-468e-a8a0-636f91903498"
 	    ],
             "extensions": {