Learn Editor: Update api-update-incidents.md

Author: hareldamti

defender-xdr/api-update-incidents.md

@@ -111,18 +111,7 @@ Here's an example of the request.
     "classification": "TruePositive",
     "determination": "Malware",
     "tags": ["Yossi's playground", "Don't mess with the Zohan"],
-    "comments": [
-          {
-              "comment": "pen testing",
-              "createdBy": "[email protected]",
-              "createdTime": "2021-05-02T09:34:21.5519738Z"
-          },
-          {
-              "comment": "valid incident",
-              "createdBy": "[email protected]",
-              "createdTime": "2021-05-02T09:36:27.6652581Z"
-          }
-      ]
+    "comment": "pen testing"
 }
 ```