Change actor_update_interval to policy_frequency in comment

cleanrl/sac_continuous_action.py

@@ -267,7 +267,7 @@ def get_action(self, x):
             if global_step % args.policy_frequency == 0:  # TD 3 Delayed update support
                 for _ in range(
                     args.policy_frequency
-                ):  # compensate for the delay by doing 'actor_update_interval' instead of 1
+                ):  # compensate for the delay by doing 'policy_frequency' updates instead of 1
                     pi, log_pi, _ = actor.get_action(data.observations)
                     qf1_pi = qf1(data.observations, pi)
                     qf2_pi = qf2(data.observations, pi)