update TODO

Author: ryanmerolle

TODO

@@ -4,4 +4,4 @@
 - TODO: Clone for ACL Interface should include device
 - TODO: Inconsistent errors for add/edit (where model is using a generic page)
 - TODO: Check Constants across codebase for consistency.
-- TODO: Test API and Forms
+- TODO: Test API, Forms, & Models - https://github.com/k01ek/netbox-bgp/tree/main/netbox_bgp/tests , https://github.com/DanSheps/netbox-secretstore/tree/develop/netbox_secretstore/tests & https://github.com/FlxPeters/netbox-plugin-prometheus-sd/tree/main/netbox_prometheus_sd/tests