Address remaining comments

Author: hamadise

apps-script/incident-response/JavaScript.html

@@ -63,4 +63,4 @@
     element.classList.remove('hidden');
   }
 </script>
-<!-- [END chat_incident_response_javascript] -->
+<!-- [END chat_incident_response_javascript] -->

apps-script/incident-response/appsscript.json

@@ -35,7 +35,8 @@
       "https://www.googleapis.com/auth/documents",
       "https://www.googleapis.com/auth/script.external_request",
       "https://www.googleapis.com/auth/userinfo.email",
-      "https://www.googleapis.com/auth/cloud-platform"
+      "https://www.googleapis.com/auth/cloud-platform",
+      "https://www.googleapis.com/auth/admin.directory.user.readonly"
     ],
     "chat": {}
   }