fix hyperlink (ansible-collections#2101)

CONTRIBUTING.md: fix hyperlink

SUMMARY

updated link for Guidelines for Ansible Amazon AWS module development
from
https://docs.ansible.com/ansible/latest/dev_guide/platforms/aws_guidelines.html
to
https://docs.ansible.com/ansible/latest/collections/amazon/aws/docsite/dev_guidelines.html

ISSUE TYPE


Docs Pull Request

COMPONENT NAME

ADDITIONAL INFORMATION

Reviewed-by: Mike Graves <[email protected]>

CONTRIBUTING.md

@@ -123,7 +123,7 @@ be found on Libera.Chat IRC as detailed below.
 - [Ansible Community Guide](https://docs.ansible.com/ansible/latest/community/index.html) - Details on contributing to Ansible
 - [Contributing to Collections](https://docs.ansible.com/ansible/devel/dev_guide/developing_collections.html#contributing-to-collections) - How to check out collection git repositories correctly
 - [Contributing to Ansible-maintained collections](https://docs.ansible.com/ansible/devel/community/contributing_maintained_collections.html#contributing-maintained-collections)
-- [Guidelines for Ansible Amazon AWS module development](https://docs.ansible.com/ansible/latest/dev_guide/platforms/aws_guidelines.html)
+- [Guidelines for Ansible Amazon AWS module development](https://docs.ansible.com/ansible/latest/collections/amazon/aws/docsite/dev_guidelines.html)
 - [Getting Started With AWS Ansible Module Development and Community Contribution](https://www.ansible.com/blog/getting-started-with-aws-ansible-module-development)