update readme to reflect changing to makefile approach

Author: nevinsm

README.md

@@ -6,7 +6,7 @@ Terraform module to set up standardized sso access in client accounts
 
 //TODO: add instructions on usage with the Viget AWS IAM Identity Center [see](https://static.global.sso.amazonaws.com/app-4a24b6fe5e450fa2/instructions/index.htm)
 
-//TODO: add instructions on setting up a .netrc to download release artifacts
+//TODO: add instructions on setting up a makefile to download release artifacts as module
 
 <!-- BEGIN_TF_DOCS -->
 ## Requirements