docs: Update link to recommended policy for aws_gateway_controller (#9)

Author: zoispag

aws_gateway_controller.tf

@@ -2,7 +2,7 @@
 # AWS Gateway Controller Policy
 ################################################################################
 
-# https://github.com/aws/aws-application-networking-k8s/blob/main/examples/recommended-inline-policy.json
+# https://github.com/aws/aws-application-networking-k8s/blob/main/files/controller-installation/recommended-inline-policy.json
 
 data "aws_iam_policy_document" "aws_gateway_controller" {
   count = var.create && var.attach_aws_gateway_controller_policy ? 1 : 0