Remove references to tests/acls from the documentation (#2088)

docs/acls.md

@@ -3,7 +3,7 @@ Headscale implements the same policy ACLs as Tailscale.com, adapted to the self-
 For instance, instead of referring to users when defining groups you must
 use users (which are the equivalent to user/logins in Tailscale.com).
 
-Please check https://tailscale.com/kb/1018/acls/, and `./tests/acls/` in this repo for working examples.
+Please check https://tailscale.com/kb/1018/acls/ for further information.
 
 When using ACL's the User borders are no longer applied. All machines
 whichever the User have the ability to communicate with other hosts as
@@ -43,7 +43,7 @@ servers.
 Note: Users will be created automatically when users authenticate with the
 Headscale server.
 
-ACLs have to be written in [huJSON](https://github.com/tailscale/hujson). Check the [test ACLs](../tests/acls) for further information.
+ACLs have to be written in [huJSON](https://github.com/tailscale/hujson).
 
 When registering the servers we will need to add the flag
 `--advertise-tags=tag:<tag1>,tag:<tag2>`, and the user that is