Comments to keep Starlark/soong api logic in sync

Test: none, added comments
Change-Id: I706c516a3601716a439bd775666a93b63c5c4f27
diff --git a/android/config.go b/android/config.go
index 78da320..8886f55 100644
--- a/android/config.go
+++ b/android/config.go
@@ -875,6 +875,8 @@
 // DefaultAppTargetSdk returns the API level that platform apps are targeting.
 // This converts a codename to the exact ApiLevel it represents.
 func (c *config) DefaultAppTargetSdk(ctx EarlyModuleContext) ApiLevel {
+	// This logic is replicated in starlark, if changing logic here update starlark code too
+	// https://cs.android.com/android/platform/superproject/+/master:build/bazel/rules/common/api.bzl;l=72;drc=231c7e8c8038fd478a79eb68aa5b9f5c64e0e061
 	if Bool(c.productVariables.Platform_sdk_final) {
 		return c.PlatformSdkVersion()
 	}