Apply suggestions from code review

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

control-plane/api-gateway/binding/result.go

@@ -247,7 +247,7 @@ var (
 	// direct port conflicts defined by the user (two listeners on the same port) vs a port conflict because we map
 	// privileged ports by adding the value passed into the gatewayClassConfig.
 	// (i.e. one listener on 80 with a privileged port mapping of 2000, and one listener on 2080 would conflict).
-	errListenerMappedToPrivilegedPortMapping = errors.New("listener conflicts with privileged port mapped by Gateway Class Config privileged port mapping setting")
+	errListenerMappedToPrivilegedPortMapping = errors.New("listener conflicts with privileged port mapped by GatewayClassConfig privileged port mapping setting")
 )
 
 // listenerValidationResult contains the result of internally validating a single listener

control-plane/api-gateway/common/helm_config.go

@@ -35,6 +35,8 @@ type HelmConfig struct {
 	// and should create SecurityContextConstraints.
 	EnableOpenShift bool
 
+	// MapPrivilegedServicePorts is the value which Consul will add to privileged container port values (ports < 1024)
+	// defined on a Gateway.
 	MapPrivilegedServicePorts int
 }