fix naming in the logs

Author: maciejriedl

pkg/firewalls/firewalls_l7_cr.go

@@ -42,7 +42,7 @@ type FirewallCR struct {
 	nodePortRanges []string
 	firewallClient firewallclient.Interface
 	// If set to true, CRs are marked as "disabled" and errors are not
-	// propagated. Firewalls should be still created/updated by l7LB, not the
+	// propagated. Firewalls should be still created/updated by L7LB, not the
 	// Platform Firewall
 	dryRun bool