update comment in l4route

Author: sarthyparty

internal/mode/static/state/graph/route_common.go

@@ -74,7 +74,7 @@ type L4Route struct {
 	ParentRefs []ParentRef
 	// Source is the source Gateway API object of the Route.
 	Source client.Object
-	// Spec is the L7RouteSpec of the Route
+	// Spec is the L4RouteSpec of the Route
 	Spec L4RouteSpec
 	// Valid indicates if the Route is valid.
 	Valid bool