Apply suggestions from code review

Co-authored-by: Anderson Queiroz <me@andersonq.me>

internal/pkg/agent/application/actions/handlers/handler_action_policy_change.go

@@ -129,11 +129,11 @@ func (h *PolicyChangeHandler) validateFleetServerHosts(ctx context.Context, cfg
 		return nil, nil
 	}
 
-	// make a copy the current client config and apply the changes in place on this copy
+	// make a copy of the current client config and apply the changes in place to this this copy.
 	newFleetClientConfig := h.config.Fleet.Client
 	updateFleetConfig(h.log, cfg.Fleet.Client, &newFleetClientConfig)
 
-	// Test new config
+	// Test the new config
 	err := testFleetConfig(ctx, h.log, newFleetClientConfig, h.config.Fleet.AccessAPIKey)
 	if err != nil {
 		return nil, fmt.Errorf("validating fleet client config: %w", err)
@@ -242,7 +242,7 @@ func (h *PolicyChangeHandler) applyFleetClientConfig(validatedConfig *remote.Con
 
 	h.config.Fleet.Client = *validatedConfig
 
-	// the config has already been validated, no need for error handling
+	// the config has already been validated, it should not error.
 	fleetClient, err := client.NewAuthWithConfig(
 		h.log, h.config.Fleet.AccessAPIKey, *validatedConfig)
 	if err != nil {