Minor doc update to docs/resources.md to fix missing ']' from JSON

payload.

docs/resources.md

@@ -173,7 +173,7 @@ Example payload:
       "Raw": "/tmp/pr/github/comments/494864767.json",
       "Text": "[APPROVALNOTIFIER] This PR is **NOT APPROVED**\n\nThis pull-request has been approved by: *<a href=\"https://github.com/tektoncd/pipeline/pull/895#\" title=\"Author self-approved\">wlynch</a>*\nTo fully approve this pull request, please assign additional approvers.\nWe suggest the following additional approver: **dlorenc**\n\nIf they are not already assigned, you can assign the PR to them by writing `/assign @dlorenc` in a comment when ready.\n\nThe full list of commands accepted by this bot can be found [here](https://go.k8s.io/bot-commands).\n\nThe pull request process is described [here](https://git.k8s.io/community/contributors/guide/owners.md#the-code-review-process)\n\n<details open>\nNeeds approval from an approver in each of these files:\n\n- **[OWNERS](https://github.com/tektoncd/pipeline/blob/master/OWNERS)**\n\nApprovers can indicate their approval by writing `/approve` in a comment\nApprovers can cancel approval by writing `/approve cancel` in a comment\n</details>\n<!-- META={\"approvers\":[\"dlorenc\"]} -->"
     },
-    ...
+    ...],
   },
   "Head": {
     "Branch": "pr",