Dead links in articles-guides

[ipa-tys]

All links in this README are dead, except for prompt engineering:
https://github.com/aws-samples/amazon-bedrock-samples/blob/main/articles-guides/README.md

[micuentadecasa]

I was reading this https://awslabs.github.io/agents-for-amazon-bedrock-blueprints/prompt-library/prompt-library/ and came to the 404 links.