fixed check_command name

Author: NavidSassan

assets/icingaweb2-module-director/all-the-rest.json

@@ -1506,7 +1506,7 @@
             "action_url": null,
             "apply_for": null,
             "assign_filter": null,
-            "check_command": "cmd-check-cert",
+            "check_command": "cmd-check-url",
             "check_interval": "43200",
             "check_period": null,
             "check_timeout": null,